已知xy≠0,且3x²-2xy-8y²=0,求x/y+y/x的值
已知,xy≠0,且3x²-2xy-8y²=0,求x/y的值
已知xy不等于0,且3x² -2xy-8y²=0,求x/y的值
已知xy≠0,且2x+3xy-2y=0,求(x+y)/(x-y)的值.
已知xy≠0,且3x²-2xy-8y²=0,求x/y+y/x的值
已知x-7y=0,且y≠0,求2x²﹢xy-3y²分之x²-3xy+y²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xy≠0,且3x²-2xy-8y²=0,求x/y的值
已知x^2-xy+3y^2=0 且xy不等于0 求x/y+y/x 的值
已知x/2=y/3(xy≠0),求x²-2xy-3y²/x²-6xy-7y²的值
已知 xy不等于0且 3x^2 - 2xy - 8y^2=0求x/y的值!
1.已知x-3y=0,且xy≠0,求x²-y²/x²-xy+y²的值.
已知xy不等于零,且3x^2-2xy-8y^2=0,求x/y的值