1.(3x^3)^2*(-2y^2)^5/(-6xy^4)
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1.(3x^3)^2*(-2y^2)^5/(-6xy^4)
PS:加号我不知道是不是*,好象是的.
(但好像是这样的).
PS:加号我不知道是不是*,好象是的.
(但好像是这样的).
原式=3^2*(x^3)^2*(-2)^5*(y^2)^5/(-6xy^4)
=9x^6*(-32y^10)/(-6xy^4)
=[9*(-32)/(-6)]*(x^6/x)*(y^10/y^4)
=48x^5y^6
=9x^6*(-32y^10)/(-6xy^4)
=[9*(-32)/(-6)]*(x^6/x)*(y^10/y^4)
=48x^5y^6
x^3y(-4y)^2+(-7xy)^2*(-xy)-5xy^3*(-3x)^2
(x-2xy)*(-xy+2y*y)-(3x*x-2xy)(x-9xy+6y*y)
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(-3x^y+2xy)-( )=4x^+xy