SOLUTION: How do you factor 144r^2-81s^2

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Question 138829: How do you factor 144r^2-81s^2
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Both terms are perfect squares. 144r%5E2 = %2812r%29%5E2 and 81s%5E2 = %289s%29%5E2.
Given: 144r%5E2-81s%5E2
%2812r%29%5E2+-+%289s%29%5E2
Which is a 'factored' as I can go with this