化简数学问题化简(2x-3)(x-4)-2(x-2)(x-3)
问题描述:
化简数学问题化简(2x-3)(x-4)-2(x-2)(x-3)
只用化简
答
(2x-3)(x-4)-2(x-2)(x-3)
=(2x²-11x+12)-2(x²-5x+6)
=2x²-11x+12-2x²+10x-12
=-x