已知X²-6XY+8Y²=0(XY≠0),则求Y分之X的值
已知X²-6XY+8Y²=0(XY≠0),则求Y分之X的值
已知x²-6xy+8y²=0(xy≠0),则求x/y的值
已知x/2=y/3(xy≠0),求x²-2xy-3y²/x²-6xy-7y²的值
已知2x²-5xy-3y²=0(xy≠0),则y分之x+x分之y的值是?
已知x-7y=0,且y≠0,求2x²﹢xy-3y²分之x²-3xy+y²的值
已知x-3y=0,y≠0,求x²-2xy+y²分之2x+y×(x-y)的值
已知:x²+y²-4x-2y+5=0,求x+√xy分之(√x-√y)²+4√xy的值.
已知x-y=4xy且xy≠0,求代数式-x-2xy+y分之2x+3xy-2y的值
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
已知x²-10x+25+|y-3|=0,求2xy+xy分之x²+x的值
已知2x²+3xy-2²=0(xy≠0),求x-y分之x+y的值
已知x>0,y>0,且x+6y=5根号xy,求(2x+根号xy-y)分之(x+根号xy+2y)的值