Y=2-√3X∧2-10X+9的最值是多少?

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 已知4x²+y²-4x-6y+10=0,求[(2/3)x√(9x)+y²√(x/y³)-(x²√(1/x)-5x√(y/x)的值 已知4x²+y²-4x-6y+10=0,求(2/3√9x+y²√x/y³)-(x√1/x-5x√y/x)的值. 已知4x²+y²-4x-6y+10=0,求(2/3√9x +y²√x/y³)-(x²√1/x -5x√y/x)的值. 5x=3y,(2x+y)的平方=5x(x+y)+9 导数的计算练习题导数的计算（1）y=x^5 （2)y=sinx(3)y=1/x^3(4)y=5^√x(5)y=cosx(6)y=5^x(7)y=log3^x(8)y=lnx(9)f(x)=x^3-x^2-x+1(10)y=2x^3-3x^2+4x-1(11)y=x inx（12）y=xsinx-cosx(13)y=cosx/x(14)y=3x(x^2+2)(15)f(x)=(x-1)^2+3(x-1)(16)f(x)=1 x²-2x+y²+6y+10=0,求—9(x+y)²+(3x-2y)(2y+3x)的值 xy²/(x²y-y) × x²/(x²+x)=(x²-3x)/(x²-5x) × 2x-10/(x²-6x+9)=化简求植x²-1/(x²-x-2)除以x/2x-4,其中x=1/2[x-x/(x+1)]除以[x/(2x-4)] ,其中x=√2+1 已知2x-y/x+2y=3,求2(2x-y)/x+2y-9(x+2y)/2x-y+3的值. 若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值 2x²+1/2y²-2x-3y+5=0,求(2x√9x-y²√x/y³)-(√1/x-7x√y/x)的值 已知x-y=3,求[（x+y)(x-y)-(x-y)^2+2y(x-y)]除以的值 已知x^2+y^2-4x-2y+5=0,求【2/3x√9x+y^2 √[x/y^2]】的值 已知实数x,y满足x=√(9-x+2y)+√(3x-6y-27)+5,则-2x-y的立方根为 若x-y不等于0,2x-3y=0,则分式(10x-11y)/(x-y)的值是（）?(10x-11y)/(x-y) =[(8x-8y)+(2x-3y)]/(x-y) =8为什么8X-8Y=8？(10x-11y)/(x-y)=[(8x-8y)+(2x-3y)]/(x-y)=8+(2x-3y)]/(x-y)=8+0=8 x,y 满足x(x-2)-y(y-6)=-10,求x,y的值 设x.y都是有理数,并且x,y满足x的平方-2y+√5y=10+3√5 x+y的值看清楚