(3x^2+1/2y-2/3y^2)*(-1/2xy)^2
问题描述:
(3x^2+1/2y-2/3y^2)*(-1/2xy)^2
答
(3x^2+1/2y-2/3y^2)*(-1/2xy)^2
=(3x²+1/2y-2/3y²)(1/4x²y²)
=3/4x^4y²+1/8x²y³-1/6x²y^4