shu/xue数学、(要算式和结果)
问题描述:
shu/xue数学、(要算式和结果)
(-2x)的平方乘3x的3次方
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-2(xy的3次方)的平方乘(-5y)
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(-x的3次方y)乘(-2xy)的3次方
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-3x的3次方y乘(-4xy的平方)的平方
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-3x(x的平方-1)
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(-2分之1a的平方b+3分之1ab的平方)乘(-4ab)
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答
1,(-2x)的平方乘3x的3次方=4x^2*3x^3=12x52,-2(xy的3次方)的平方乘(-5y)=-2x^2y^6*(-5y)=10x^2*y^73,(-x的3次方y)乘(-2xy)的3次方 = -x^3y*(-8x^3Y^3)=8x^6*y^44,-3x的3次方y乘(-4xy的平方)的平方=-3x^3y*...