Question

factor the difference of two squares. 64x2-81y2

Answer 1

here's a hint...

the difference of two squares formula is \[\huge a^2 - b^2 = (a+b)(a-b)\]

Answer 2

does that help?

Answer 3

Start by realizing that the problem is about the difference between two perfect squares. This form in general is: a^2 - b^2 which is factored by (a + b)(a - b). The difference in sign allows ba (which is the same as ab) to cancel with -ab, so that you have 2 terms instead of four. Use this same approach to the above problem.

Answer 4

I don't get it

Answer 5

64x^2-81y^2
(8x)^2 - (9y)^2

Answer 6

Now, use the formula given by @lgbasallote