SOLUTION: Write a quadratic equation having given the solution of: -8, -5

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Question 658866: Write a quadratic equation having given the solution of: -8, -5
Found 2 solutions by nerdybill, MathLover1:
Answer by nerdybill(7384) About Me  (Show Source):
You can put this solution on YOUR website!
Write a quadratic equation having given the solution of: -8, -5
Factors must be
(x+8) and (x+5)
.
multiply them together to get your quadratic equation:
(x+8)(x+5)
x^2+5x+8x+40
x^2+13x+40 (answer)

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
Let a=-8, y=-5

then
We have %28x-a%29%28x-b%29=0
that is %28x%2B8%29%28x%2B5%29=0,
expand the left side,
x%5E2+%2B+5x%2B8x+%2B40+=+0

x%5E2+%2B+13x+%2B40+=+0....your solution

+graph%28+600%2C+600%2C+-15%2C+20%2C+-10%2C+50%2C+x%5E2+%2B+13x+%2B40%29+