(x一2y)的3次方乘以(2y一x)的2n+1次方÷(x一2y)的2n+2次方
问题描述:
(x一2y)的3次方乘以(2y一x)的2n+1次方÷(x一2y)的2n+2次方
答
=y^3/X *1/2y
=y^2/2x