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13-05-2020
Mathematics

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simplify (2a+b)^2-(2a+b)(a-3b)

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LadishCat LadishCat

13-05-2020

Answer:

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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