1.3(x-5)^2-14=2
3(x-5)^2=16
(x-5)^2=16/3
x-5=+-4/根号3
x1=5+4/根号3,x2=5-4/根号3.
2.(x-1)(x+2)=4
x^2+x-6=0
(x-2)(x-3)=0
x1=2,x2=-3