若|x-2|与(y+1/2)²互为相反数,试求代数式x²y-3xy²-1/3(3x
若|x-2|与(y+1/2)²互为相反数,试求代数式x²y-3xy²-1/3(3x
若|2x+y-3|与(y-2)²互为相反数,求4x²y-3xy的值?
已知√(X-Y+3)与√(X+Y-1)互为相反数.试求X²+XY+Y²的值.
已知|x-2|与[y-(1/3)x]²互为相反数,化简并求代数式的值2x²+(-x²+3x
已知(x+2)²与|x+y-1|互为相反数,求代数式(图)的值
已知|xy-2|与|y-2|互为相反数,试求代数式1/xy+1/(x+1)*(y+1)+1/(x+2)*(y+2)+.+
已知|xy-2|与|y-1|互为相反数,试求代数式xy分之一+(x+1)(y+1)分之一+(x+2)(y+2)分之一+.
已知(x-2)的平方与(y+1)的平方互为相反数,求代数式x-(x+y)+(x+2y)-(x+3y)+...-(x+
若根号3x-2y-1与根号2x+y-3互为相反数求(xy)2010
已知xy互为相反数,且(2x-3)²-(2y+1)²=48,求xy的值
若|2x+y-3|与(y+2x)²互为相反数,求4x²y-3xy的值
已知xy为实数,且满足(x+y-根号3)²与根号下(2x-y)互为相反数,求8x²+4y²