what is (a+b)2 formula
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(a+b)2 = a2 +b2+2ab
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➡ (a + b)² = a² + b² + 2ab
More formulae :-
=> (a + b)(a - b) = a² - b²
=> (a - b)² = a² + b² - 2ab
=> (a + b)³ = a³ + b³ + 3ab(a + b)
=> (a - b)³ = a³ - b³ - 3ab(a - b)
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