计算题:(-2x+3y)(3y-2x)
问题描述:
计算题:(-2x+3y)(3y-2x)
答
=(3y-2x)²
=9y²-12xy+4x²
计算题:(-2x+3y)(3y-2x)
=(3y-2x)²
=9y²-12xy+4x²