计算 (16 18:57:11)
问题描述:
计算 (16 18:57:11)
(2x-3)(x-1)
答
(2x-3)(x-1)
=2X*X+2X*(-1)+(-3)*X+(-3)*(-1)
=2X平方-2X-3X+3
=2X平方-5X+3