Which is a factor of 144 − 49x^2?
a.) 12 - 7x^2
b.) 72 – 7x^2
c.) 12 – 7x
d.) 72 + 7x

The only factor listed below is C. 12 - 7x.

In order to find this, you can use the law of squares. If a binomial is two squares separated by a subtraction sign, you can create the following parenthesis.

()()

So, given that we have a = 144 and b = 49x^2, we can use the law of squares.

()()

()()

(12 + 7x)(12 - 7x)

the answer will be the last one

72 is the answer to this problem