Question

Factor 10x2 – 42x – 108.
Question 20 options:

A)

(5x + 9)(x + 6)

B)

2(5x + 9)(x – 6)

C)

(x + 9)(5x – 6)

D)

2(10x – 9)(x + 6)

Answer 1

Answer:

B

Step-by-step explanation:

You have to know how to factor polynomials.

2(5x^2-21x-54)

2(5x^2-30x+9x-54)

2(5x(x-6)+9(x-6))

2(5x+9)(x-6)

Answer 2

It’s gone be B.(5x +9