√(3X+Y-6)+√(-3X+2Y-3)=√3a*√-3a求√(6的X方倍*2的Y方倍)
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(y-x)^4(x-y)^3+2(x-y)^6(y-x)
(x+y)/2- x-y/2=6 3(x+y)=4(x-y)
2(x-y)²-3(x-y)(-y-x)
已知4x²+y²-4x-6y+10=0求(2/3x(√9x)+(y²√x/y³)×(x²√1/x×5x√y/x)的值
已知4x²+y²-4x-6y+10=0求(2/3x(√9x)+(y²√x/y³)-(x²√1/x-5x√y/x)的值
先化简 再求值 (2x-y)(y+x)-(x-2y)(2y+x)-(-3y+x)^2其(√x+1)+y^2+4=-4y
1.((y+2x)(-2x+y)+4(x+2y)^2)/3y 2.(2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2)/2(x-y)^2
√x(√x+2√y)=√y(6√x+5√y,求x-3√xy+2y/x+√xy-6y
[2(x-y)^5-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2
3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-xy*y+y*y*y等于多少?
因式分解3x^2(x-y)+6x(y-x)
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
数学题化简再求值(1/x-y+1/x+y)÷x^2 y^2/x^2-y^2,其中x=3,y=-√2
x(x-y)2-(y-x)3
计算:(3x-4y)-[-(2y+x)+(x-3y)]-6x
[2/3x-2/x+y(x+y/3x-x-y)]/x-y/x
化简:{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x
计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x