Can someone please help me with this question?

12

Step-by-step explanation:

You simplify root 72 as much as possible which would be root 36 times root 2.

This would have then equaled 6 root 2.

You do 6 × root 2 × root 2.

This would then be 6 × 2, which would then equal 12.

Hope this helps :)

hello from mrbilldoesmath!

answer:

x - 3

discussion:

x^2 - 9 = (x-3) (x+3)   so

(x^2-9)/ (x + 3) = x-3

you,

mrb

you probably already have the answer but anyways it's b. 15.0

step-by-step explanation: