1.x=2分之(7±根号53)
2.2x^2+3x-3=0
x=4分之(-3±根号33)
3.x²-2x-24=0
(x-6)(x+4)=0
x1=6,x2=-4
4.x=2.5
5.x^2+2x-4=0
x=-1±根号5
6.16x^2=1
x=±1/4
1.x=2分之(7±根号53)
2.2x^2+3x-3=0
x=4分之(-3±根号33)
3.x²-2x-24=0
(x-6)(x+4)=0
x1=6,x2=-4
4.x=2.5
5.x^2+2x-4=0
x=-1±根号5
6.16x^2=1
x=±1/4