The Quardatic and Cubic formulae | Basic mathematics Quardatic and Cubic formulae | All Quardatic and Cubic formulae | Cubic Equations | Brilliant Math & Science Wikipedia
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a2 – b2 = (a – b) (a + b)
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(a+ b)2 = a2 + 2ab + b2
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a2 + b2 = (a – b)2 + 2ab
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(a – b)2 = a2– 2ab + b2
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(a + b + c)2 = a2 + b2 + c2
+ 2ab + 2ac + 2bc
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(a – b – c)2 = a2 + b2 + c2
– 2ab – 2ac + 2bc
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(a + b)3 = a3+ 3a2b + 3ab2
+ b3 ; (a + b)3 = a3 + b3
+ 3ab(a + b)
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(a – b)3 = a3– 3a2b + 3ab2
– b3
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a3 – b3 = (a – b) (a2 + ab + b2)
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a3 + b3 = (a + b) (a2 – ab + b2)
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(a + b)3 = a3+ 3a2b + 3ab2
+ b3
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(a – b)3 = a3– 3a2b + 3ab2
– b3
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