Select the quadratic that has roots x=8 and x=-5 a x^2 + 3x -40 B x^2-3x-40 C x^2 + 13x +40 Dx^2-13x+40

asked Aug 4, 2019 200k views

4 votes

Select the quadratic that has roots x=8 and x=-5 a x^2 + 3x -40

B x^2-3x-40
C x^2 + 13x +40
Dx^2-13x+40

by Iivel

7.5k points

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5 votes

If x = 8, then the factor is (x - 8); likewise, if x = -5, then the factor is (x + 5). FOIL those together and get B

Evan Aad answered Aug 8, 2019

7.4k points

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