Răspunsuri

2014-09-17T11:59:41+03:00
2. 3x-12=-15⇒3x=-15+12⇒3x=-3⇒ x=-3/3⇒ x=-1
3.1-2x>-11⇒ -2x>-11-1⇒ -2x>-12⇒2x<12⇒ x<6
exercitiul 1 e scris corect, adica x2?
x la puterea a 2-a
treci pe -9 in partea stanga si descompui in factori si obtii: (x-3)(x-3)=0 , x-3=0, x=3