计算:(−1/2xy2)2(3xy−4xy2+1).
问题描述:
计算:(−
xy2)2(3xy−4xy2+1). 1 2
答
(-
xy2)2(3xy-4xy2+1)1 2
=
x2y4(3xy-4xy2+1)1 4
=
x3y5-x3y6+3 4
x2y4.1 4