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алгебра

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569

1

(а+б)^2

Guest 24.09.2013

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1⁺⁰ Answers

+5454

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(a+b)^2
=(a+b)*(a+b)
=a^2 +ab +ab+ b^2
=a^2+2ab+b^2

kitty<3 08.10.2013

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