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Ezequiel
22 June, 19:45
Simplify (2a+b) ^2 - (2a+b) (a-3b)
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Jamar Farley
22 June, 21:00
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Distribute:
4a^2+4ab+b^2+-2a^2+5ab+3b^2
Combine like terms:
(4a^2+2a^2) + (4ab+5ab) + (b^2+3b^2)
=2a^2+9ab+4b^2
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