【(5x+3y)(3x+2y)+(x+3y)(x-2y)】÷(4x)其中,x=3,y=-2,化简求值.
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(x-y)^3×(y-x)^4+(x-y)^2×(y-x)^5
2(x-y)²-3(x-y)(-y-x)
2(x-y)+3(x+y)2-5(x-y)-8(x+y)2-(x-y)
先化简,再求值 [2/3x - 2/x+y(x+y/3x -x-y)]*x/x-y,其中5x+3y=0
[(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)
((x+2y)x^2+(x-y)(3x-y)-5y^2)÷2x
若3x-5y=0,则x+y/x=(),x-y/y=(),2x-3y/2x+3y=( )
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(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,
-(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)
-3(x-y)(x-y)+3(x-y)
化简:5(x-y)+2(x+y)-3(x-y)
3x(x-2y)+(x+2y)(2x-y)-3y(y-2x)