Question

How do you factor `36x^2 - 169y^2`?

Answer 1

We know that `color(blue)(a^2 - b^2 = (a+b)(a-b)`

`36 x^2 - 169y^2 = (6x)^2 - (13y)^2`

`(6x)^2 - (13y)^2 = (6x-13y)(6x+13y)`