How do you solve this? (X+4)(x-9)-4x=0

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How do you solve this? (X+4)(x-9)-4x=0

Guest Apr 3, 2015

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Best Answer

+130517

+5

(X+4)(x-9)-4x=0 simplify

x^2 -5x - 36 - 4x = 0

x^2 - 9x - 39 = 0 factor

(x - 12)(x + 3) = 0 set each factor to 0 and solve

So

x = 12 and x = -3

CPhill Apr 3, 2015

2⁺⁰ Answers

+130517

+5

Best Answer

(X+4)(x-9)-4x=0 simplify

x^2 -5x - 36 - 4x = 0

x^2 - 9x - 39 = 0 factor

(x - 12)(x + 3) = 0 set each factor to 0 and solve

So

x = 12 and x = -3

CPhill Apr 3, 2015

0

x^2-9x-36=0 is the answer people.

the only thing that you guys do is make up answers and get them incorrectly as a duphus gubers

Guest Apr 4, 2015

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