SOLUTION: How would I complete a question like (r3 + r2)^2

SOLUTION: How would I complete a question like (r3 + r2)^2

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Question 659726: How would I complete a question like (r3 + r2)^2
Answer by ReadingBoosters(3246) (Show Source): You can put this solution on YOUR website!
Starting with (r3 + r2)^2
(r3 + r2)(r3 + r2)
Use FOIL - first, outside, inside, last
9r^2 + 6r^2 + 6r^2 + 4r^2
25r^2
Alternatively
(r3 + r2) is 5r, so (5r)^2 = 25r^2
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