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What is formulae for a plus b holesquare
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What is formulae for a plus b holesquare

User Timothy Leung
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(a+b)^2=(a+b)(a+b)=aa+ab+ab+bb=a^2+2ab+b^2\\\\\boxed{(a+b)^2=a^2+2ab+b^2}
User Alphacentauri
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