(2x^2-2x+2/1)/(x-2/1)怎么算啊?
问题描述:
(2x^2-2x+2/1)/(x-2/1)怎么算啊?
是因式分解里面的。
答
(2x^2-2x+2/1)/(x-2/1)
=2(x^2-x+4/1)/(x-2/1)
=2(x-2/1)^2/(x-2/1)
=2(x-2/1)
=2x-1