SOLUTION: Find a quadratic equation with the following roots: 4 and -5

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Question 303082: Find a quadratic equation with the following roots: 4 and -5
Answer by nerdybill(7384) About Me  (Show Source):
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Find a quadratic equation with the following roots: 4 and -5
.
If you had solutions of 4 and -5 then two factors are:
(x-4) and (x+5)
.
Multiply them together to get the quadratic equation:
(x-4)(x+5)
x^2 + 5x -4x - 20
x^2+x-20