Răspunsuri

2014-09-28T13:46:51+03:00
Cel mai inteligent răspuns!
2014-09-28T13:47:08+03:00
|3x-2|=3x-2 daca 3x-2>0 , adica 3x>2 ⇒ x>2/3
|3x-2|= - (3x-2)= -3x+2 , daca x<2/3
⇒ daca x<0, |3x-2|=- 3x +2

Asemanator faci si pt  X-3
|x-3|=x-3 daca x-3>0 adica x>3
|x-3|= - x + 3 , daca x<3
⇒ daca x<0, |x-3|= - x+3

|2-x|= 2-x daca 2-x>0 , x<2
⇒ daca x<0, |2-x|= 2-x

V(-2x)^2= -2x, pt x<0
3 4 3