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完全平方公式可表示为: (a±b)2=a2±2ab+b2 在学习中,逆用完全平方公式;可快速准确求解.现以近年来的竞赛试题为例说明如下:
The complete square formula can be expressed as: (a±b)2=a2±2ab+b2 In learning, the complete squared formula is used in reverse; the solution can be solved quickly and accurately. The competition test questions in recent years are illustrated as follows: