Question 695689
multiply 
(2r+3s)^2
1st step: (2r+3s)(2r+3s)
Use FOIL:
F: 2r*2r = 4r^2
O: 2r*3s = 6rs
I: 2r*3s = 6rs
L: 3s*3s = 9s^2
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Combine those products to get: 4r^2 + 12rs + 9s^2
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Cheers,
Stan H.
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