Răspunsuri

2014-09-10T17:22:46+03:00
|x+1|=2
Ridici la a doua
(x+1)^2=4
x^2 +2x+1=4
x^2+2x-3=0
delta=4+12=16
x1=(-2+4)/2=1
x2=(-2-4)/2=-3
2014-09-10T17:25:35+03:00