Question

Factor the expression 4r^2 - 64

Answer 1

For this case we must factor the following expression:

$4r ^ 2-64$

We take common factor 4:

$4 (r ^ 2-16)$

We factor the expression within the parenthesis:

$4 [(r-4) (r + 4)]$

Finally we have that the factored expression is:

$4 [(r-4) (r + 4)]$

Answer:

$4 [(r-4) (r + 4)]$

Answer 2

Answer:

4(r+4)(r-4)

Step-by-step explanation:

If you factor it out, then it will be 4(r+4)(r-4). You can double check by multiplying it.