帮忙做几道数学题,要用因式分解的方式,方法为分组分解法. 1.xy-xz+y-z 2.a^2+ab+ac+bc3.ax-2bx+ay-2by4.4xy-3xz+8y-6z5.x^3+3x^2+3x+96.3xy-2x-12y+87.ab-5bc-2a^2+10ac8.5ax+7ay-5bx-7by9.x^3 y+3x-2x^2 y^2-6y10.x^2-a^2-2x-2a11.x^3+x^2 y -xy^2-y^312.x^2-y^2+ax+ay13.x^2-x-9y^2-3y14.a^2-b^2+4b-415.a^2-2ab+b^2-c^216.x^2-y^2-z^2+2yz17.9-4a^2-4ab-b^218.-1-2x-x^2+y^2麻烦要写出过程哦~~今天就要,就在线等~~

问题描述:

帮忙做几道数学题,要用因式分解的方式,方法为分组分解法. 1.xy-xz+y-z 2.a^2+ab+ac+bc
3.ax-2bx+ay-2by
4.4xy-3xz+8y-6z
5.x^3+3x^2+3x+9
6.3xy-2x-12y+8
7.ab-5bc-2a^2+10ac
8.5ax+7ay-5bx-7by
9.x^3 y+3x-2x^2 y^2-6y
10.x^2-a^2-2x-2a
11.x^3+x^2 y -xy^2-y^3
12.x^2-y^2+ax+ay
13.x^2-x-9y^2-3y
14.a^2-b^2+4b-4
15.a^2-2ab+b^2-c^2
16.x^2-y^2-z^2+2yz
17.9-4a^2-4ab-b^2
18.-1-2x-x^2+y^2
麻烦要写出过程哦~~今天就要,就在线等~~

1.xy-xz+y-z =x(y-z)+(y-z)=(y-z)(x+1)2.a^2+ab+ac+bc=a(a+b)+c(a+b)=(a+b)(a+c)3.ax-2bx+ay-2by=x(a-2b)+y(a-2b)=(a-2b)(x+y)4.4xy-3xz+8y-6z=x(4y-3z)+2(4y-3z)=(4y-3z)(x+2)5.x^3+3x^2+3x+9=x^2(x+3)+3(x+3)=(x+3...