问题
解答题
计算: (1)(2xy2)3-(5xy2)-(-xy2)2 (2)(-
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答案
(1)原式=8x3y6-(5xy2)•(x2y4)=8x3y6-5x3y6=3x3y6;
(2)原式=-4+4×1+32=9.
故答案为3x3y6、9.
计算: (1)(2xy2)3-(5xy2)-(-xy2)2 (2)(-
|
(1)原式=8x3y6-(5xy2)•(x2y4)=8x3y6-5x3y6=3x3y6;
(2)原式=-4+4×1+32=9.
故答案为3x3y6、9.