若3分之1=-6则x=______;若-2x=11,则x=________
1.若x^2+3x-1=0,则x-3/3x^2-6x÷(x+2 - 5/x-2)=________.
若式子2分之x-1与3分之x-1互为相反数.则x=______过程
1.已知f(x-1)=x^2+x,则f(2)=______,f(x+2)=________
急要!初一数学!若3的2x-1次方=x=________,若3的x次方=1/27,则x=________.
若x=-3,则-x=______;若lxl=2,则x=________;若a=-7,lal=lbl,则b=_______
计算:(x-1)方分之3-(x-1)方分之3x=________.
若x^2+3x-1=0,则x^3+5x^2+5x+18=______
若分式3x*x-x-2 分之4x-9=3x+2分之a-x-1分之b,则a,b的值为
若2x+3y-1=y-x-8=x+6,则2x-y=______.
(5x-6y)(x+y)=0(x≠0) 则x分之y=________
6分之x-2=x分之x+3-1
若1/2x³=4,则x=________;若(x-2)²=5,则x=________.