Question

Factor this expression completely.

35x − 40

A) 5(7x − 8)
B) 5(7x + 8)
C) 7(5x + 8)
D) 7(5x − 8)

Answer 1

A

Explanation:

I took the test

Answer 2

A

Explanation:

5 and 7 are both common factors of 35 and 40

Looking at the options you can eliminate C and D right away because 7 times 8 = 56 and not 40 like the problem is asking.

This leaves A and B. Looking at the equation the difference between the two are the + and -

Using the original equation (35x-40) as reference we see that it subtracts the two variables. Therefore leaving A as the answer