SOLUTION: Use the “difference of squares” rule to factor the following expression: 36x^2-9y^2

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Question 385308: Use the “difference of squares” rule to factor the following expression:
36x^2-9y^2
Answer by texttutoring(324) About Me  (Show Source):
You can put this solution on YOUR website!
The difference of squares rule is this:

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

In your case, a^2=36x^2 and b^2=9y^2, therefore:

36x^2 - 9y^2 = (6x+3y)(6x-3y)

That's it. It's factored!