计算(3b+2a)(2a-3b) (3m-2n)(-3m-2n) (xy-5)(-xy-5) (-2x)²-)(-2x+3)(-2x-3)
问题描述:
计算(3b+2a)(2a-3b) (3m-2n)(-3m-2n) (xy-5)(-xy-5) (-2x)²-)(-2x+3)(-2x-3)
答
计算(3b+2a)(2a-3b) (3m-2n)(-3m-2n) (xy-5)(-xy-5) (-2x)²-)(-2x+3)(-2x-3)