MATHEMATICAL FORMULAE Algebra 1. (a + b)2 = a2 + 2ab + b2 ...

MATHEMATICAL FORMULAE Algebra 1. (a + b)2 = a2 + 2ab + b2 ...

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日期:2025-06-26
MATHEMATICAL FORMULAE. Algebra. 1. (a + b)2 = a2 + 2ab + b2; a2 + b2 = (a + b)2 − 2ab. 2. (a − b)2 = a2 − 2ab + b2; a2 + b2 = (a − b)2 + 2ab. 3. (a + b + c)2 ......看更多