若3x-3y-x²+2xy-y²+10=0求x-y
若3x-3y-x²+2xy-y²+10=0求x-y
2x²-3xy=y²=0(x,y不得o)求x/y+y/x
若x=1/2,y=1 求x(x²+xy+y²)-y(x²+xy+y²)+3xy(
已知(x+3)+丨X-y+10丨=0 ,求5x²y-[2x²y-(3xy-xy²)-3x&
已知x-3y=0,求(x²-2xy+y²/x-y)-2y的值
若2x平方+3xy-2y平方=0,求x+y/x-y
若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值
已知x-3y=0,求2x+y/x²-2xy ×(x-y)的值
若根号x+y-3+绝对值xy+x+y-2=0,求x/y+y/x
已知3x^2+xy-2y^2=0,求{(x+y)/(x-y)+4xy/(y^2-x^2)}/{(x+3y)*(x-y)}
已知3x*+xy-2y*=0,求(x/y)-(y/x)-(x*+y*)/(xy)的值.*是平方
已知2X-3√xy-2y=0(x>0)求2x²+xy-9y²分之x²+4xy-16y