Question

Which is a factor of 144 − 49x2? 12 - 7x2 72 – 7x2 12 – 7x 72 + 7x

I only asked this question so you guys would know the other answer is wrong i took the test and this is the answer

Answer 1

For this case we have the following expression:

$144 - 49x ^ 2$

We can rewrite the expression by factoring

Rewriting the expression we have:

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

Then, using the distributive property for the negative sign we have:

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

Thus, we have that one of the factors of the given expression is:

12-7x

Answer:

A factor of the given expression is:

12-7x

option 3

Answer 2

Answer: Option 3(C)

Right on ED 2020, Good luck!