Question

Va rog frumos cat mai rapid la cele 2 exercitii, dau coroana

Answer 1

Răspuns:

|2x+1|=1-x

2x+1=1-x. 3x=0. x=0

=>. =>

2x+1=-1-x. 3x=-2. x=-1.5

S={-1.5; 0}

2x+1<_3

2x+1<_3. 2x<_ 2. x<1

=>. =>

2x+1<_-3. 2x<_-4. x<-2

x1 apartine (- infinit;1)

x2 apartine (-infinit;-2)