x-y+4)

(x+y)(x-y)+4(y-1)(x+y)(x-y)+4(y-1)=x²-y²+4y-4=x²-(y-2)²=(x-y+2)(x+y-2)

x(x-y)+4(y-x)因式分解x(x-y)+4(y-x)=x(x-y)-4(x-y)=(x-y)(x-4)=(x-y)(X+2)(X-2)

（y-x)+x(x-y)^3-(y-x)^4因式分解题目抄错吗

[(x+y)(x-y)-(x-y)²+2y(x-y)]÷4yx-y这是小学题目么?

计算3x+4y/x-y+3y/y-x-4x/x-y3x+4y/x-y+3y/y-x-4x/x-y=(3x+4y)/(x-y)-3y/(x-y)-4x/(x-y)=(3x+4y-3y-4x)/(x-y)=(y-x)/(x-y)=-1=(3x+

3x+4y/x-y+3y/y-x-4x/x-y=(3x+4y)/(x-y)-3y/(x-y)-4x/(x-y)=[(3x+4y)-3y-4x]/(x-y)=(y-x)/(x-y)=-1(3x+4y)/(x-y)+3y/(y-x)-4x/(x

x(4y-x)(x-3y)+y(3y-x)(x-4y)因式分解（x＋y）（4y－x）（x－3y）

化简x+y\x²-y²-2x-y\4x(x-y)+y²原式=(x+y)/(x+y)(x-y)-(2x-y)/(4x²-4xy+y²)=1/(x-y)-(2x-y)/(2x-y)²=

(4x-x-2x)×(4y-y-2y)(4x-x-2x)×(4y-y-2y)=x(4-1-2)·y(4-1-2)=xy

(2x-y)²-4(x-y)(x+2y)

4x(2x-y)-2y(y-2x)分解因式：4x(2x-y)-2y(y-2x)=4x(2x-y)+2y(2x-y)=(2x-y)(4x+2y)

计算：(x-y)^8÷(y-x)^4×(x-y)原式=（x-y）^(8-4+1)=(x-y)^5任何非零实数的偶次幂都是正数所以（y-x）^4=（x-y）^4

4x(2x-y)-2y(y-2x)轻轻地睁开双眸,春风俏皮地拨动着我的眼眉,并旋着轻快的舞姿在发梢尖跳起了巴蕾,我的心跟着风儿起舞,春意就这样一点一点在心中荡漾开来.春天的风充满着柔情,芬香四溢怀裹着希望,婀娜地轻拂过柳梢,轻吻着那些嫩芽,

化简：（2x-y)²-4(x-y)(x+y)(2x-y)²-4(x-y)(x+y)=(4x²-4xy+y²)-4(x²-y²)=4x²-4xy+y²-4x

[4(x+y)平方-x-y]÷(x+y)化简是吧:[4(x+y)平方-x-y]÷(x+y)=[4(x+y)平方-(x+y)]÷(x+y)=4(x+y)+14-1=3设（X+Y）=Z得=(4Z2-Z)*1/Z=4Z-1

2(x+y)平方(x-y)-4(x+y)立方2(x+y)^2(x-y)-4(x+y)^3=2(x+y)^2[x-y-2(x+y)]=2(x+y)^2(x-y-2x-2y)=2(x+y)^2(-x-3y)

{(z+y)(x-y)-(x-y)的2次方+2y(x-y)}除以4y(x-y)(z+y-x+y+2y)÷4y=(x-y)(z-x+4y)÷4y{(x+y)(x-y)-(x-y)的2次方+2y(x-y)}除以4y=(x-y)(x+y-x+y+

x-y+5y-4yx+(-1+5-4)y=x

(2x-y)^2-4(x-y)(x+2y)(2x-y)^2-4(x-y)(x+2y)(2x-y)^2-4(x-y)(x+2y)=4x^2-4xy+y^2-4(x^2+2xy-xy-2y^2)=4x^2-4xy+y^2-4x^2-4xy+8y

x+2y+4y^2/x-y+4x^y/4y^2-x^2“4y^2/x-y”应该是“4y^2/x-2y”吧x+2y+4y^2/x-2y+4x^2y/4y^2-x^2=(x+2y)+4y^2/(x-2y)+4x^2y/(2y-x)(2y+x)=