Question

Factor completely: 9m2 − 49

Answer 1

It's a difference of two squares,
Given a form of

a^2 - b^2, it is factorable to
(a + b)(a - b), so
I take it this is simple from here on? :)

Answer 2

9m^2-7^2
(9m-7)(9m+7)

Answer 3

According to what @terenzreignz
(3x-7)(3x+7)

Answer 4

i think a=9m
b=7

Answer 5

its 9m^2

Answer 6

and the sqrt of 9 is 3