(-3xy^2)^2乘2xy除以(3x^2y^5)?
=(9x²y^4)*2xy/(3x^2y^5)
=18x^(2+1)y^(4+1)/(3x^2y^5)
=6x^(3-2)y^(5-5)
=6xy^0
=6x
(x-y)^5除以(y-x)^3?
=-(y-x)^5/(y-x)^3
=-(y-x)^(5-3)
=-(y-x)²
(-3xy^2)^2乘2xy除以(3x^2y^5)?
=(9x²y^4)*2xy/(3x^2y^5)
=18x^(2+1)y^(4+1)/(3x^2y^5)
=6x^(3-2)y^(5-5)
=6xy^0
=6x
(x-y)^5除以(y-x)^3?
=-(y-x)^5/(y-x)^3
=-(y-x)^(5-3)
=-(y-x)²