计算:(-2/3x-3/2y)²

问题描述:

计算:(-2/3x-3/2y)²
计算:(-3分之2x-2分之3y)的平方

(-2/3x-3/2y)²
=(2/3x+3/2y)²
=(2/3x)²+2×(2/3x)×(3/2y)+(3/2y)²
=4/9x²+2xy+9/4y²