SOLUTION: write quadratic equation whose roots are : 9 and -5

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Question 988266: write quadratic equation whose roots are :
9 and -5











Found 2 solutions by Fombitz, MathLover1:
Answer by Fombitz(32388) About Me  (Show Source):
Answer by MathLover1(20849) About Me  (Show Source):
You can put this solution on YOUR website!
quadratic equation whose roots are :
x%5B1%5D=9 and x%5B2%5D=-5+
use zero product theorem:
y=%28x-x%5B1%5D%29%28x-x%5B2%5D%29
y=%28x-9%29%28x-%28-5%29%29
y=%28x-9%29%28x%2B5%29
y=x%5E2%2B5x-9x-45
highlight%28y=x%5E2-4x-45%29=>your equation