multiply :(a+b+c) (2a+2b+2c)
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Step-by-step explanation:
(a+b+c) (2a+2b+2c)
2a^2+2ab+2ac+2ab+2b^2+2bc+2ac+2ab+2c^2
2a^2+2b^2+2c^2+4ab+4bc+4ca
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