0
5x2 + 8x = 7
5x2 + 8x - 7 = 0
This cannot be factorised so the solutions need to be determined using the quadratic formula
The solutions are {-8 ± sqrt[82 - 4*5*(-7)]}/(2*5)
= {-8 ± sqrt[64 + 140]}/10
= {-8 ± sqrt[204]}/10
= -2.22829 and 0.62829 (to 5 dp)
Still curious? Ask our experts.
Chat with our AI personalities
SteveKnowledge is a journey, you know? We'll get there.
Chat with Steve
LaoThe path is yours to walk; I am only here to hold up a mirror.
Chat with Lao
JudySimplicity is my specialty.
Chat with JudyAdd your answer:
Earn +20 ptsQ: What are the solutions of 5x2 plus 8x equals 7?
Write your answer...
Submit
Still have questions?
Continue Learning about Math & Arithmetic
What are the solutions for 5x2-2x plus 16 equals 4x2 plus 6x?
5x2-2x+16=4x2+6x ,or x2-8x+16=0, or x2-2(x)(4)+(4)2=0, or (x-4)2=0, or (x-4)(x-4)=0, or x=4
How many solutions are there for the equation x2 plus 16 equals 8x?
2 this Domo
How many solutions does the linear system -8x plus 2y equals 6 and -4x plus y equals 3 have?
Two solutions and they are:- x = 0 and y = 3
How many solutions are there in 8x plus 11 equals 8x plus 8?
That equation has no solutions.There's no number that can go in place of 'x' that canmake the equation a true statement.
How do you factor 5x2 plus 8x - 21?
(5x - 7)(x + 3)
Trending Questions
What is 52 -4x-4?
How many ways can the letters in FACTOR be arranged so that the first and last letters are vowels?
What is 22 over 30 simplified?
What is a rate as used in math class?
What is the value of an 1844 half dime with twelve stars?
What is 14 divided by 0.35?
How many seconds are in 3minutes 24 seconds?
What is the simplest for of 42 divided by 60 in simplest form?
What is 54 inches in yards?
How many of the four centers always remains on or inside a triangle?
What day of the week was March 18 1971?
What are the names of the roman numerals?
Sketch a triangle that is not regular?
Why dont cylinders cones and spheres have any edges?
How many faces do 6 triangles have meeting at each vertex?
Where is the square root button on the Casio fx 85gt plus calculator?
Find a pair of factors of 368 whose sum is 39?
How many sides does a polygon have if the interior angles equal 108?
What is 384.9 in word form?
1 What are all the possible rational zeros for f x 6x 3 plus 6x 2-15x-2 2 If f x x 3 plus 4 and g x x plus 3 find g f 2?
Copyright ©2025 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.