含字母的二次三项式的因式分解 1、-kx^2+(2-k)x+2 2、ax^2-(2a-1)x+2 3、ax^2+(2a-1)x 4、-2ax^2+(a-2)1、-kx^2+(2-k)x+2 2、ax^2-(2a-1)x+2 3、ax^2+(2a-1)x 4、-2ax^2+(a-2)

含字母的二次三项式的因式分解 1、-kx^2+(2-k)x+2 2、ax^2-(2a-1)x+2 3、ax^2+(2a-1)x 4、-2ax^2+(a-2)1、-kx^2+(2-k)x+2 2、ax^2-(2a-1)x+2 3、ax^2+(2a-1)x 4、-2ax^2+(a-2)
含字母的二次三项式的因式分解 1、-kx^2+(2-k)x+2 2、ax^2-(2a-1)x+2 3、ax^2+(2a-1)x 4、-2ax^2+(a-2)
1、-kx^2+(2-k)x+2
2、ax^2-(2a-1)x+2
3、ax^2+(2a-1)x
4、-2ax^2+(a-2)

含字母的二次三项式的因式分解 1、-kx^2+(2-k)x+2 2、ax^2-(2a-1)x+2 3、ax^2+(2a-1)x 4、-2ax^2+(a-2)1、-kx^2+(2-k)x+2 2、ax^2-(2a-1)x+2 3、ax^2+(2a-1)x 4、-2ax^2+(a-2)
1、-kx^2+(2-k)x+2
=﹣[kx²+﹙k-2﹚x-2]
=﹣﹙kx-2)(x+1)
2、ax^2-(2a-1)x-2
=﹙ax+1﹚﹙x-2﹚
3、ax^2+(2a-1)x
=x﹙ax+2a-1)
4、-2ax^2+(a-2)
=﹣[2ax²-﹙a-2﹚]
=﹣[√2a＋√﹙a-2﹚][√2a-√﹙a-2﹚]﹙a＞2﹚