121/(-x-2)≥x-20 (121-(x-20)(-x-2))/(-x-2)≥0 (121+x²+2x-20x-40)/(-x-2)≥0 (x²-18x+81)/(-x-2)≥0 (x-9)²/(-x-2)≥0 x=9 x=-2 + _ _ ________________________________ -2 9 x∈(-≈;-2)