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(-x2-y)2等于A.-x2-2xy+y2B.-x4-2x2y+y2C.x4+
(-x2-y)2等于A.-x2-2xy+y2B.-x4-2x2y+y2C.x4+
发布时间:2020-07-26 15:22:56
(-x2-y)2等于A.-x2-2xy+y2B.-x4-2x2y+y2C.x4+2x2y+y2D.x4-2xy-y2
网友回答
C解析分析:利用完全平方公式即可求解.解答:(-x2-y)2=x4+2x2y+y2故选C.点评:本题主要考查了完全平方公式,正确对公式理解运用是解决本题的关键.
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