Question

Factor the following x^2/81- y^2/100

Answer 1

The answer is (x/9+y/10)(x/9-y/10)
Steps:

Answer 2

This expression is the difference of two squares.

It can be rewritten as (x/9)^2 - (y/10)^2.

The factors are     [(x/9) - (y/10)] [(x/9) + (y/10)].