x^y乘(2xy-3xy^2)=___________________=________________
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x^y乘(2xy-3xy^2)=___________________=________________x^y乘(2xy-3xy^2)=___________________=____________
x^y乘(2xy-3xy^2)=___________________=________________
x^y乘(2xy-3xy^2)=___________________=________________
x^y乘(2xy-3xy^2)=___________________=________________
x^y*(2xy-3xy^2)
=2x^(y+1)y-3x^(y+1)y^2
=x^(y+1)y(2-3y)
x^y乘(2xy-3xy^2)=_____2x^2y^2______________-_____3x^2y^3___________
X²+2xy+y²/xy乘x²-2xy+y²/xy+y²=
2xy^2+x^2y-xy=xy乘( )
x^y乘(2xy-3xy^2)=___________________=________________
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