吧x1x2-x1-x2=1分解成()()=a的形式x1+x2-x1x2=2 x1x2+x1+x2=6x1x2-x1-x2=3x1+x2-2x1x2=3急!

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吧x1x2-x1-x2=1分解成()()=a的形式x1+x2-x1x2=2  x1x2+x1+x2=6x1x2-x1-x2=3x1+x2-2x1x2=3急!
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吧x1x2-x1-x2=1分解成()()=a的形式x1+x2-x1x2=2 x1x2+x1+x2=6x1x2-x1-x2=3x1+x2-2x1x2=3急!
吧x1x2-x1-x2=1分解成()()=a的形式
x1+x2-x1x2=2
x1x2+x1+x2=6
x1x2-x1-x2=3
x1+x2-2x1x2=3
急!

吧x1x2-x1-x2=1分解成()()=a的形式x1+x2-x1x2=2 x1x2+x1+x2=6x1x2-x1-x2=3x1+x2-2x1x2=3急!
x1x2-x1-x2=1
(x1-1)(x2-1)=2
x1+x2-x1x2=2
(x1-1)(x2-1)=-1
x1x2+x1+x2=6
(x1+1)(x2+1)=7
x1x2-x1-x2=3
(x1-1)(x2-1)=4
x1+x2-2x1x2=3
(2x1-1)(x2-1/2)=7/2

x1x2-x1-x2=1
(x1-1)(x2-1)=2
x1+x2-x1x2=2
x1x2-x1-x2=-2
(x1-1)(x2-1)=-1
x1x2+x1+x2=6
(x1+1)(x2+1)=7
x1x2-x1-x2=3
(x1-1)(x2-1)=4
x1+x2-2x1x2=3
(x1-1/2)(-2x2+1)=5/2

吧x1x2-x1-x2=1分解成()()=a的形式x1+x2-x1x2=2 x1x2+x1+x2=6x1x2-x1-x2=3x1+x2-2x1x2=3急! (x1x2²+x1²x2-x1+x2)/x1x2怎么分解因式? (X2-X1)-[(X2-X1)/(X1X2)]是怎样得到(X2-X1)(1-1/X1X2) 求化简过程,(x1+a/x1)-(x2+a/x2)=(x1-x2)/x1x2(x1x2-a) x1-x2)+x1x2分之4(x2-x1)怎样化简成((x1-x2)(1-x1x2分之4) (x1-x2)+(x2-x1)/(x1x2)=(x1-x2)【1-(x2-x1)/(x1x2)】=(x1-x2)【(x1x2-1)/(x1x2)】这是正确的等式 但是为什么这么算啊 x1-x2-(x1-x2/x1x2)为什么等于(x1-x2)(x1x2-1/x1x2)要详解万分感谢 (X2-X1)+(X1-X2/X2X1)怎么分解成(X2-X1)[1-1/X1X2]是怎么分解来的的 求一种因式分解方法x1x2-x1-x2=2,怎么可以分解成(x1-1)(x2-1)=3啊,我怎么也搞不懂这种分解方法,谁能帮我讲解一下 有关勾股定理的变形(如(x1+1)(x2+1)=x1x2+x1+x2+1) 已知x1+x2=-5,x1x2=3,求下列各式的值(1)x1²x2+x1x2² (2) (x1+3)(x2+3) (x1-x2)+(x2-x1)/x1x2 = (x1-x2)(1- 1/x1x2) 请问这是怎么变形的? (x1-x2)+9(x2-x1)/x1x2=(x1-x2)(1-9/x1x2)请问这个怎么化简的啊? 这道题怎么化简的?(X1-X2)+4(X2-X1)/X1X2 如何化简成 (X1-X2)(1-4/X1X2) 为什么(x2-x1)+(x1-x2)/x1x2=(x2-x1)(1-1/x1x2) x2-x1+{-(x2-x1)/x2x1}怎么分解成(x2-x1)(1-1/x2x1) (√X1-√X2)+1/X2-1/X1是如何化简为 (√X1-√X2)(√X1+√X2+X1X2)/X1X2的 . (x1-x2)+(x2-x1)/(x1x2)=(x1-x2)(x1x2-1)/x1x2 这一步怎么推出来的,(x1-x2)+(x2-x1)/(x1x2)=(x1-x2)(x1x2-1)/x1x2 这一步怎么推出来的,