Решите неравенство x^2-5x-6>0
x²- 5x - 6 > 0
x²- 5x - 6 = 0
x₁ = 6; x₂ = -1
++++ ----- +++++
---------------- -1 --------------6------------------>
x ∈ (-∞; -1)U(6; ∞)