Răspunsuri

2014-11-02T20:52:24+02:00
X la puterea 2 - 2x +23=x la 2 + 3x+x+3
x la 2 se simplifica

-2x+23=4x+3
20=6x
x=20:6
x=10:3
2014-11-02T20:53:18+02:00