1
1){1-x≥0⇒x≤1
{x+1≥0⇒x≥-1
{1-x>x²+2x+1⇒x²+3x<0⇒x(x+3)<0⇒-3<x<0<br>-1≤x<0<br>2){1-x≥0⇒x≤1
{x+1<0⇒x<-1<br>x<-1<br>x∈(-∞;0)
2
1){3x-2≥0⇒x≥2/3
{x-2≥0⇒x≥2
{3x-2>x²-4x+4⇒x²-7x+6<0⇒1<x<6<br>x1+x2=7 U x1*x2=6⇒x1=1 U x2=6
2≤x<6<br>2){x-2<0⇒x<2<br>{3x-2≥0⇒x≥2/3
2/3≤x<2<br>x∈[2/3;6)
3
{2x+1≥0⇒x≥-1/2
{x+1≥0⇒x≥-1
{2x+1≤x²+2x+1⇒x²≥0⇒x∈R
x∈[-1/2;∞)