(2x^2y-4xy^2+6y^3)\(-1\2y)(4)[(x+1)(x+2)-2]\x

问题描述:

(2x^2y-4xy^2+6y^3)\(-1\2y)(4)[(x+1)(x+2)-2]\x

(2x^2y-4xy^2+6y^3)\(-1\2y)
=-4x²+8xy-12y²
(4)[(x+1)(x+2)-2]\x
=(x²+3x+2-2)/x
=x+3