Question

If x-9 is a factor of x2 – 5x - 36, what is the other factor?

x - 4
x + 4
A
ООО
X-6
X + 6

Answer 1

x²-5x-36

=> x²-9x+4x-36 = 0

=> x(x-9)+4(x-9)

=> (x-9) (x+4)

Explanation:

Answer 2

(x-9) (x+4)

Explanation:

x^2 – 5x - 36,

What two numbers multiply to -36 and add to -5

-9 *4 = -36

-9+4 = -5

(x-9) (x+4)