Proof That (A+B)2 = A2 +2Ab + B2

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(a-b)2 = a2 - 2ab + b2 but WHY? Proof that (a-b)2 = a2 - 2ab + b2 !!! Math Mantra Video !!!

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Simple proof of a²+b²=(a+b)²-2ab=(a-b)²+2ab and a²-b²=(a+b)(a-b).

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# ( a+b )² = a²+b²+2ab and ( a-b)² = a²+b² - 2ab formula proof

Why (a-b)2=a2+b2-2ab

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Why??(a-b)^2 = a2+b2-2ab??? explained😯

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(a-b)2=a2-2ab+b2 FORMULA

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