1)√(x²-x-6)=6(x-1)/(x-1)=6 x≠1 ОДЗ x²-x-6≥0 x1+x2=1 U x1*x2=-6⇒x1=-2 U x2=3 + _ + _______________________ -2 3 x∈(≈;-2) U (3;≈) x²-x-6=36 x²-x-42=0 x1+x2=1 U x1+x2=-42 x1=-6 U x2=7