Question

factorize x^2-y^2/9​

Answer 1

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

Using identify a^2 - b^2 = (a+b)(a-b)

= (3x + y)(3x - y) / 9