若根号(2X-3Y+38)与(3X-2Y+12)2互为相反数,那么X+Y/(根号X+根号Y)+2XY/(X*根号Y+Y*根号X)的值等于A.0 B.根号2 C.根号5 D.5倍根号2
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若根号(2X-3Y+38)与(3X-2Y+12)2互为相反数,那么X+Y/(根号X+根号Y)+2XY/(X*根号Y+Y*根号X)的值等于A.0 B.根号2 C.根号5 D.5倍根号2
化简:((根号x-根号y)^3+2x根号x+y根号y)/(x根号x+y根号y)+(3根号xy-3y)/(x-y)
已知a=3+2倍根号2,b=3-2倍根号2,则a³b-ab³=?(x根号y-y根号x)/(x根号y+y根号x)-(y根号x+x根号y)/(y根号x-x根号y)二次根式-3倍根号3x与根号2ax的和是一个二次根式,则正整数a的最小值为?若根号x+
若x大于0,y大于0,且根号x乘(根号x+根号y)若X大于0,Y大于0,且根号X乘(根号X+根号Y)=3乘根号Y(根号X+根号Y),求X+根号XY-Y分之2X+根号XY+3Y的值
若x>o,y>o,且根号x(根号x+根号y)=3根号y(根号x+5根号y)求x+根号xy分之2x-根号xy-5y式子是√x(√x+√y)=3√y(√x+5√y),求x+√xy分之2x-√xy-5y
已知根号xy3与根号xy1互为相反数已知根号x-y+3与根号x+y-1互为相反数,求(2X-Y)的平方根
若x>0,y>0,且根号下x(根号下x+根号下y)=3根号下y(根号下x+5根号下y),求(2x+2根号下若x>0,y>0,且根号下x(根号下x+根号下y)=3根号下y(根号下x+5根号下y),求(2x+2根号下xy+3y)/(x-根号下xy+y
已知根号x=根号2-1/根号2,根号y=根号3-1/根号3,求代数式【(x+y)/(根号x-根号y)】-求代数式【(x+y)/(根号x-根号y)】-2xy/(x根号y-y根号x)已知根号x=根号2-(1/根号2),根号y=根号3-(1/根号3),求代数
4x-y/2根号x+根号y 9x-6根号xy+y/3根号x-根号y
解数学根号题x>0,y>0, 且根号x(根号x + 根号y )=3倍根号x(根号x +5倍根号y )时,求 2x+根号xy+3y --------------- x+根号xy-y
若y=2根号x-3+根号3-x+6,则根号x+y=
已知x,y为正数,且根号x(根号x+根号y)=3根号y(根号x+5根号y),求:(2x+根号xy+3y)/(x+根号xy-y)
如果X>0,Y>0,且 根号X(根号X+ 根号Y)=3根号Y(根号X+ 5根号Y),求(2X+根号XY+3Y)/(X+根号XY-Y)的值.
x根号x+x根号y/xy-y^2)-(x+根号xy+y/x根号x-y根号)y
(根号x+根号y-1)(1-根号y+根号x),其中x=3根号2,
{2x的平方-(x+y)(x-y)}{(-x-y)(y-x)+2y的平方}x=根号2,y=根号3
代数式求值.已知x=2,y=根号3,求 (根号x-根号y)/(根号x+根号y)+(根号x+根号y)/(根号x-根号y)已知x=2,y=根号3,求 (根号x-根号y)/(根号x+根号y)+(根号x+根号y)/(根号x-根号y)
若根号2x+y-8与|x+2y-10|互为相反数,求2x+3y的平方根