{x²-2x-2>0 {x²-2x-2≤1 1)x²-2x-2>0 D=4+8=12 x1=(2-2√3)/2=1-√3 U x2=1+√3) x<1-√3 U x>1+√3 2)x²-2x-3≤0 x1+x2=2 U x1*x2=-3 x1=-1 U x2=3 -1≤x≤3 /////////////////////////////////////////////////////////////// -------[-1]-----------(1-√3)----------(1+√3)-----------[3]------ /////////////////////////////// \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\ x∈[-1;1-√3) U (1+√3;3]