(1)计算:(2x2y)3?(5xy2)÷(-10x2y4)(2)先化简,再求值:(2x-1)2-(3x+1)(3x-1)+5x(x-1
(1)计算:(2x2y)3?(5xy2)÷(-10x2y4)(2)先化简,再求值:(2x-1)2-(3x+1)(3x-1)+5x(x-1),其中x=-1....
(1)计算:(2x2y)3?(5xy2)÷(-10x2y4)(2)先化简,再求值:(2x-1)2-(3x+1)(3x-1)+5x(x-1),其中x=-1.
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