5(x-y)+2(x-y)-4(x-y)=
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5(x-y)+2(x-y)-4(x-y)=
5(x-y)+2(x-y)-4(x-y)=
5(x-y)+2(x-y)-4(x-y)=
5(x-y)+2(x-y)-4(x-y)
= (5 +2 -4 )(x-y)
= 3 (x-y)
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5(x-y)+2(x-y)-4(x-y)
=(5+2-4)(x-y)
=3(x-y)
=3x-3y
(x-y)^3×(y-x)^4+(x-y)^2×(y-x)^5
[(x+y)(x-y)-(x-y)的平方+2y(x-y)]除以(4y)请帮我一下写两道计算题[(x+y)(x-y)-(x-y)的平方+2y(x-y)]除以(4y)[(3x+2y)(3x-2y)-(x+2y)(5x-2y)]除以(4x)
{(x²+y²)-(x-y)+2y(x-y)}/4y
.先化简再求值:(2x+y)(2x+y)-(2x-y)平方其中X,Y满足X平方+Y平方-2X+4Y+5=0
(x-y)(x-y)2(y-x) (x+2y-?)(x-2y+?)
(y-x)^4(x-y)^3+2(x-y)^6(y-x)
y'=(y/x)^2+y/x+4微分方程
12(x+y)^3(y-x)/【4(x+y)^2(x-y)】
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(x-2y)²+(2x-4y)(x+y)+(x+y)²
(x+y)/2- x-y/2=6 3(x+y)=4(x-y)
计算:[(x+y)³-2(x+y)²-4(x+y)]÷(x+y)
2分之x+y+3分之x-y;4(x+y)-(x-y)谢谢了,
2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-(x-y)
化简x+y分之x²-y²-2X-y分之4x(x-y)+y²
(-4x-y)(-5x+2y)
(x-2y)(x+y)+(x+y)计算
合并同类项3(x-y)^4-(2(x-y)^4-5(X-Y)^4)-(X-Y)^4合并同类项3(x-y)^4-(2(x-y)^4-5(X-Y)^4)-(X-Y)^4