Question

Factor the trinomial x^2- 5x- 36 Which of the following is one of the factors?

Answer 1

Answer:

Final factor is (x-9)(x+4)

Step-by-step explanation:

Given expression is $x^2- 5x- 36$.

Now we need to factor that expression

$x^2- 5x- 36$

Find two numbers whose product is -36 and sum is -5.

Two such numbers oare -9 and +4. So we get:

$=x^2- 9x+4x- 36$

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

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

Hence final factor is (x-9)(x+4)

Answer 2

Answer:

(x-9) (x+4)

Step-by-step 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)