已知 xy≠0且x²-8xy+16x²=0,求x:y
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3x²-2xy-8y²=0,求x/y+y/x的值
已知x²-4xy+4y²=0,且xy≠0,那么x-y/x+y
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xy≠0,且2x+3xy-2y=0,求(x+y)/(x-y)的值.
1.已知x-3y=0,且xy≠0,求x²-y²/x²-xy+y²的值.
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
已知x²-6xy+8y²=0(xy≠0),则求x/y的值
已知2X-3√xy-2y=0(x>0)求2x²+xy-9y²分之x²+4xy-16y