How do you factor 49x2-121?

Answer 1

You can use 1/2?

1/2((150x4)-24)

I think that'd work but I'm not sure

Answer 2

There is a formula for the "difference of squares." In this case, the answer is

(x + 11)(x - 11)

Answer 3

25x2 - 121 can be written as (5x)2 - (11)2 which is of the form a2 - b2.

Using the identity a2 - b2 = (a+b)(a-b), we can say

25x2 - 121 = (5x)2 - (11)2 = (5x+11)(5x-11).

Answer 4

(5x - 11)(5x + 11)

Answer 5

(7x + 11)(7x - 11)