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The prime factors of 180a2 are 2, 2, 3, 3, 5, a, and a.

The prime factors of 210a are 2, 3, 5, 7, and a.

The prime factors in common are 2, 3, 5, and a, so the greatest common factor is 2 x 3 x 5 x a = 30a. If a is divisible by 7, there would be two factors of 7 in a2, so the extra 7 would be another factor in common with 210a, in which case the greatest common factor would be 7 x 30a = 210a

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15y ago
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Hudson Grotti

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2y ago
so,what is the answer?
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DudeBot

1w ago

Oh, dude, the greatest common factor of 180a² and 210a is like 30a. You just gotta find the largest number that can divide both of them without leaving a remainder and the highest power of 'a' that appears in both terms. It's like finding the common ground in a messy breakup, just a lot less emotional.

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E.M Robinson

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1mo ago

30a

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Q: What is the greatest common factor of 180a2 and 210a?
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Here it is:"Rollercoaster" August 17, 2007 (2007-08-17) N/A 101A In the series premiere, Phineas Flynn and his older stepbrother Ferb build a rollercoaster for the neighborhood, much to their sister Candace's displeasure. Meanwhile, Perry, the boys' secret agent platypus, tries to stop his nemesis Dr. Doofenshmirtz from controlling the Earth's rotation with a magnet and a giant sheet of tin foil.Songs: Perry The Platypus 2(1B) "Lawn Gnome Beach Party of Terror!" September 28, 2007 (2007-09-28) N/A 102B Phineas and Ferb build a backyard beach, which Candace begins to enjoy; Doofenshmirtz tries to steal all the lawn gnomes in the Tri-State Area.Songs: Backyard Beach, If Summer Only Lasted One Day, Perry The Platypus, The Moment Has Arrived 3(2A) "Flop Starz" February 1, 2008 (2008-02-01) N/A 104B The boys become one-hit wonders, while Candace wins a chance to sing on stage with them. Meanwhile, Doofenshmirtz creates a building that is actually a giant robot that wreaks havoc in Danville.Songs: Gitchee, Gitchee, Goo, I'm Linda And I Wanna Have Fun! 4(2B) "The Fast And The Phineas" February 2, 2008 (2008-02-02) N/A 102A The boys transform Mom's car into a remote-controlled race car and enter it into a race. Meanwhile, Doofenshmirtz tries to deflate everything in the Tri-State Area, even though his Deflatinator is mounted on a blimp.Songs: Go, Phineas! 5(3a) "Lights, Candace, Action!" February 3, 2008 (2008-02-03) N/A 105B Candace stars in the movie The Princess Sensibilities. However she finds out that new directors Phineas and Ferb have changed it to The Curse of the Princess Monster. Meanwhile, Doofenshmirtz creates an Age-Acclerator-Inator to age cheese, but ends up trying to age Perry. 6(3b) "Raging Bully" February 4, 2008 (2008-02-04) N/A 105A Phineas enters a thumb-wrestling competition with Buford after getting tips from boxing champion Evander Holyfield; Doofenshmirtz creates a hypnotic device to control people's minds so they will be forced to celebrate his birthday and clean up afterwards. 7(4a) "Candace Loses Her Head" February 5, 2008 (2008-02-05) N/A 101B The boys plan to carve Candace's face into Mount Rushmore for her birthday; Perry tries to prevent Doofenshmirtz from boring a tunnel to the People's Republic of China from Mount Rushmore. 8(4b) "I, Brobot" February 6, 2008 (2008-02-06) N/A 110b The boys clone themselves as Phinedroids and Ferbots (robots) so they can get more projects completed; Doofenshmirtz hovers over his girlfriend's house with a huge magnet to erase crazy messages he recorded on her answering machine. In the end credits, it is also seen that Candace accidentally makes a Can-droid (a Candace android). Title Reference: iRobot 9(5a) "Run Away Runway" February 7, 2008 (2008-02-07) N/A 112a Candace goes to the famous runway, while Phineas and Ferb make their own fashion designs entitled 'Summer All The Time'. Doofenshmirtz designs a machine to create clones of himself so they can wait in line for him. 10(5b) "The Magnificent Few" February 8, 2008 (2008-02-08) N/A 104a The boys become cowboys and drive a herd of rampaging cattle; Doofenshmirtz plans to release termites that will consume everything made of wood so he can launch an aluminum-siding business. 11(6a) "S'Winter" February 9, 2008 (2008-02-09) N/A 104b The boys use a sno-cone machine to create a Winter paradise during the middle of Summer in their backyard (calling it S'Winter or Wummer); Doofenshmirtz plans to use a device to melt all of the chocolate in the Tri-State area and drain it into his own candy factory. 12(6b) "Jerk De Soleil" February 10, 2008 (2008-02-10) N/A 108A The boys create a circus for the neighborhood after their original circus plans are cancelled, while Jeremy gives Candace wild parsnips which she is allergic to. Doofenshmirtz creates a device to make people's voices higher so his own voice will seem lower but instead, it gets even higher. 13(7a) "Are You My Mummy?" February 15, 2008 (2008-02-15) N/A 102A The boys visit an Egyptian-themed movie theater and attempt to get a mummy of their own, but they end up capturing Candace, who is wrapped in toilet paper; Doofenshmirtz tries to raise the city's water level by destroying a beaver dam so his real estate will become beachfront property. 14(7b) "I Scream, You Scream" February 17, 2008 (2008-02-17) N/A 112B The boys make the world's biggest ice-cream maker for Isabella after her tonsils are taken out; Doofenshmirtz's daughter, Vanessa, spends the day at his lair and tries to convince his ex-wife (voiced by Allison Janney) that he's evil, in the same style as Candace to Linda. This episode also marks the revelation that Ferb likes Vanessa Doofenshmirtz. 15(8a) "Toy to the World" February 22, 2008 (2008-02-22) N/A 108B The boys create a wooden version of Perry and sells the idea to a toy company, and the new doll becomes a huge hit. Unfortunately for Candace, she's forced to wear a Perry costume at the mall toy store where she works. Perry defeats Doofenshmirtz who is trying to build the Great Wall of the Tri-State area and making high-priced tollbooths at the entrance. 16(8b) "Get That Bigfoot Outta My Face!" February 23, 2008 (2008-02-23) N/A 106A Candace and the boys visit their grandparents at a lake house and the children try to scare her with a fake Bigfoot, but then their grandma's twin scares them with a more lifelike Bigfoot; Perry is trapped in Doofenshmirtz's love triangle as he bursts in while on a date. 17(9a) "It's a Mud, Mud, Mud, Mud World" February 24, 2008 (2008-02-24) N/A 113a The boys invent a monster truck for Candace to practice driving, but soon her practice run turns into a massive racing rally; Doofenshmirtz tries to discover investors for his line of monster trucks that are actual monsters. Note: Billy Ray Cyrus guest stars as Buck Buckerson. 18(9b) "Journey to the Center of Candace" February 29, 2008 (2008-02-29) N/A 107b The boys build a shrinking submarine so they can go inside Isabella's dog and retrieve a sash the pet ate, but they accidentally end up in Candace's stomach instead while she is on a date with Jeremy. 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Candace plays croquet with Jeremy in the park while his jealous sister torments Candace by putting squirrels in her pants. 35(19a) "Put That Putter Away" August 10, 2008 (2008-08-10) N/A 120a When the town's only miniature golf course is closed, Phineas and Ferb build a giant miniature golf course. Candace gets sick so Stacey decides to bust the boys. Meanwhile Doofenshmirtz uses an atomic-powered leaf blower for revenge on his neighbor. 36(19b) "Does This Duckbill Make Me Look Fat?" August 10, 2008 (2008-08-10) N/A 120b Phineas & Ferb watch a movie about a molecular transporter, then build a real one. When Candace and Perry both fall into it at the same time, Candace and Perry's brains are switched. 37(20a) "Ready for the Bettys" September 12, 2008 (2008-09-12) N/A 115a The boys accidentally discover Perry's secret lair and are thrust into a spy mission of their own; Candace and her friend, Stacy travel on a tour bus with the Bettys, but later realize they're only being used as servants. 38(20b) "The Flying Fishmonger" September 12, 2008 (2008-09-12)[1] N/A 115b The boys help Ferb's grandfather live his life long dream--to jump a gorge in his motorcycle, the Holy Mackerel. Doofenshmirtz tries to kick sand all over his bully's house. 39(21) "One Good Scare Ought to Do It!" October 3, 2008 (2008-10-03) N/A 111 Isabella has the hiccups and Phineas and Ferb build a haunted house to scare them away. Candace goes over to Jeremy's house, but is interrupted by his little sister Suzy. Dr. Doofenshmirtz tries to help his mentor by destroying his lab. 40(22a) "The Monster of Phineas-n-Ferbenstein" October 17, 2008 (2008-10-17) N/A 122a The boys learn about one of Ferb's Victorian ancestors, Ferbgor and Dr. Phineastein, who once created a giant Perry-like monster.[2] 41(22b) "Oil on Candace" October 17, 2008 (2008-10-17) N/A 122b Phineas and Ferb help their friend Django display his artwork; Doofenshmirtz tries to impress his former Evil Science professor. 42(23a) "Out of Toon" November 7, 2008 (2008-11-07) N/A 103a Phineas and Ferb make a cartoon show with with their friends; Doofenshmirtz invents a ray that makes people dance. Note: This episode aired a day before it's actual airing date in the UK as part of the new episodes of Phineas and Ferb along with Hail Doofania! 43(23b) "Hail Doofania!" November 7, 2008 (2008-11-07) N/A 103b Dr. Doofenshmirtz builds his own country on a giant inner tube and Vanessa tries to bust him. Meanwhile Phineas and Ferb create a rainbow just for Isabella. Candace and Vanessa accidentally switch clothes at the dry cleaners. Note: This episode aired a day before its actual airdate in the UK as part of the new episodes of Phineas and Ferb along with Out Of Toon. 44 (24) "Out to Launch" December 5, 2008 (2008-12-05) N/A 124 Phineas and Ferb build a rocket and go into space. Dr. Doofenshmirtz launchs a robot that is a finger puppeteer. Isabella wants to ask Phineas to the dance. Note: The episode aired in Australia as the unaired episode from Spot The Diff. 45 (25) "Phineas and Ferb Get Busted" February 16, 2009 (2009-02-16) N/A 123 Linda finds the boys using her car as a rocket, and the boys get shipped to reformatory school. Candace is surprised that it is no fun without her brothers so she goes on a rescue mission with Jeremy. 46 (26a) "Unfair Science Fair" February 17, 2009 (2009-02-17) N/A 126a Phineas and Ferb help Baljeet to build a portal to Mars. 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Meanwhile, Perry must stop the sleep deprived Dr. Doofenshmirtz from moving the Danville Lighthouse to the other side of town so that he isn't bothered by all the ships. 68 (12a) "The Baljieatles" August 7, 2009 (2009-08-07) July 25, 2009 214a The guys help Baljeet put together a rock concert at a summer music camp. Title Reference: The Beatles 69 (12b) "Vanessary Roughness" August 7, 2009 (2009-08-07) July 25, 2009 214b Doofenshmirtz's daughter, Vanessa, tries to prove to her dad that she is responsible enough to have a car of her of her own. 70 (13a) "No More Bunny Business" August 14, 2009 (2009-08-14) August 1, 2009 215a A rogue bunny secret agent poses as a new family pet in an attempt to locate Perry's lair. 71 (13b) "Spa Day" August 14, 2009 (2009-08-14) August 1, 2009 215b Phineas and Ferb create a spa day and hire Baljeet as their mancicurist and Buford as their masseur; Doofenshmirtz takes in a lost kitten that causes nothing but trouble. 72 (14a,b) "Time Machine 2 Quantum Boogaloo, Part I and II[3]" September 25, 2009 (2009-09-25)[3] September 21, 2009 212 Phineas and Ferb travel to the future to find a tool that hasn't been invented yet, and run into future Candace. 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