计算1/2x^4y^2乘(-2xy^3)乘(-1/2x)^3=( )
3个回答
1/2x^4y^2乘(-2xy^3)乘(-1/2x)^3
=[1/2*(-2)*(-1/2)^3]x^(4+1+3)y^(2+3)
=1/8 x^8 y^5
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