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Orlando Zieme

Lvl 10
βˆ™ 3y ago
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βˆ™ 15y ago

x+y=30 xy=12 so x=12/y and y+12/y=30 so y^2+12=30y or y^2-30y+12=0 Now solve this quadratic. the numbers are -(sqrt(213)-15) and (sqrt(213)+15)

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Q: What two numbers added equal 30 and multiplied equal -12?
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