√(x^2-x-6) x^2-x-6 ≥0(x-3)(x+2)≥0x≥3 or x≤-2 (1)√(x^2-x-6) x^2-x-6 < x^2x-6 >0x>6 (2)(1) and (2)√(x^2-x-6) =>x>6