(4x-3y)-[(-13y-x)+(x-y)]-5x
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(4x-3y)-[(-13y-x)+(x-y)]-5x(4x-3y)-[(-13y-x)+(x-y)]-5x(4x-3y)-[(-13y-x)+(x-y)]-5x
(4x-3y)-[(-13y-x)+(x-y)]-5x
(4x-3y)-[(-13y-x)+(x-y)]-5x
(4x-3y)-[(-13y-x)+(x-y)]-5x
(4x-3y)-[(-13y-x)+(x-y)]-5x
(y-x)^4(x-y)^3+2(x-y)^6(y-x)
(x-y)^3×(y-x)^4+(x-y)^2×(y-x)^5
12(x+y)^3(y-x)/【4(x+y)^2(x-y)】
(x+y)^6/(x+y)^4-(x-y)^5/(x-y)^3 化简 ..
2分之x+y+3分之x-y;4(x+y)-(x-y)谢谢了,
(x+y)/2- x-y/2=6 3(x+y)=4(x-y)
2(x+y)-(x-3y)=13 4(x+y)+3(x-3y)=1解方程组 2(x+y)-(x-3y)=13 4(x+y)+3(x-3y)=1
已知X,Y满足x平方+y平方—4x+6y+13=0,求代数式(3x+y)的平方-3(3x-y)(x+y)-(x-3y)(x+3y)
(x-4y)分之(3x)+(4y-x)分之(x+y)-(x-4y)分之(7y)
2(x+y)-(x-3y)=13,4(x+y)+3(x-3y)=1
X×X-2XY-Y×Y+2X-2Y+2=02X×2X-4XY-2Y×2Y+3X-3Y+4=0X×X+2XY+Y×Y+X+Y-56=0X×X-2XY+Y×Y-X+Y-12=0X×X-3XY+Y×Y=-13X×3X-XY+3Y×3Y=13 两个在一起的方程之间有所联系(要求一步一步写出来)
-3(x-y)(x-y)+3(x-y)
2(x-y)²-3(x-y)(-y-x)
[(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)
3(x-1)³y-(1-x)³z m(x-y)²-x+y x²(x+y)(y-x)-xy(x+y)(x-y) 因式分解
(x/x+y +2y/x+y)乘以xy/ x+2y除以(1/x+1/y)(2)(3x^2/4y)^2乘以2y/3x+ x^2/2y^2除以2y^2/x
计算:(3x-4y)-[-(2y+x)+(x-3y)]-6x