5(x+y)-4(3x-2y)+3(2x-3y)
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5(x+y)-4(3x-2y)+3(2x-3y)5(x+y)-4(3x-2y)+3(2x-3y)5(x+y)-4(3x-2y)+3(2x-3y)5(x+y)-4(3x-2y)+3(2x-3y)=5x+
5(x+y)-4(3x-2y)+3(2x-3y)
5(x+y)-4(3x-2y)+3(2x-3y)
5(x+y)-4(3x-2y)+3(2x-3y)
5(x+y)-4(3x-2y)+3(2x-3y)
=5x+5y-12x+8y+6x-9y
=-x+4y
-x+4y
(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)
(y-x)^4(x-y)^3+2(x-y)^6(y-x)
12(x+y)^3(y-x)/【4(x+y)^2(x-y)】
(x+y)/2- x-y/2=6 3(x+y)=4(x-y)
2分之x+y+3分之x-y;4(x+y)-(x-y)谢谢了,
2(x-y)²-3(x-y)(-y-x)
-(5x+y)-7(x-y) -2分之1(x+y)+4分之1(x+2y) 4x-2(x-2) -2x-(3x-1) x-(5x-2y)+2(2x-y)
2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-(x-y)
因式分解(x-2y)(x-3y)+(x-4y)(x-5y)+(x-3y)(x-5y)+(x-2y)(x-4y)
1.(x^3-x^2-4x+1)/(x^2-3x+2)-(x^3-2x^2-9x+21)/(x^2-5x+6)+(x^2-3x+8)/(x^2-4x+3)2.{(x^2)/(x-y)}*{y/(x+y)}-{(x^4y)/(x^4-y^4)}÷{(x^2/x^2+y^2)^2}
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
因式分解 (3x+2y)-(x-y)² x²-xy+3y-3x 2x²+xy-y²-4x+5y-6
初一计算题(请写清楚步骤)1.(x+5)(x+5)-(x-2)(x-3)2.(2x-y)(2x-y)-4(x-y)(x+2y)3.(x+y+z)(x-y+z)
先化简,再求值 [2/3x - 2/x+y(x+y/3x -x-y)]*x/x-y,其中5x+3y=0
计算:(3x+4y)(3x-4y)-5(x+y)(x-2y)
x+2y=3(x+y)+5 3x-4y=4(x+y)-15
x²-y²+5x+3y+4(x+y-2xy)(x+y-z)+(xy-1)²