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数学
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(5)(-2x²)×(-y)+3xy×(1-3分之1x);(6)(-6x²)²+(-3x)³×x
人气:448 ℃ 时间:2019-08-22 15:31:26
解答
(5)(-2x²)×(-y)+3xy×(1-3分之1x)
=2x²y+3xy-x²y
=x²y+3xy
;(6)(-6x²)²+(-3x)³×x
=36x^4-3x^4
=33x^4
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(5)(-2x²)×(-y)+3xy×(1-3分之1x);(6)(-6x²)²+(-3x)³×x
-3x³+6x²y-3xy²
因式分解:3x3-6x2y+3xy2=_.
3x³y³.(-1/3x²y)²+(-1/2x²y)³.8/3xy²
计算 (-3xy²)²·(2x²y)³+(-2x²y²)³·3x²y
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