(x+y)(-2x-12y)
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(x+y)(-2x-12y)
不知从何下手
不知从何下手
![(x+y)(-2x-12y)](/uploads/image/z/16991717-5-7.jpg?t=%28x%2By%29%28-2x-12y%29)
解题思路: 根据整式的运算法则进行计算 .
解题过程:
解:
解题过程:
解:
![](http://img.wesiedu.com/upload/0/b9/0b9174c045342d4a07ce1dae89bda27c.gif)
(x-y)^2+12(x-y)+36
1、x(x-y)(x+y)-x(x+y)^2
(1)(x^2/x)-y-x-y
【(x-y)^2+(x+y)(x-y)】除以 2x
4(x+y)^2-12(x+y)(x-y)+9(+y)^2因式分解,
{(x,y) |x|+|y|
x>y?x:y
[(-x-y)(-x+y)-(x+y)^2-x(y-y^2)}÷1/2y
x^2-y^2/x+y-4x(x-y)+y^2/2x-y,
(x+y)^2(x-y)^2-(x-y)(x+y)(x^2+y^2)分解因式
化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方
【x-3y][x+y]-[x-2y][x +2y]-[x-y