X^2 - 4x - 5< 0.решите неравенство
X^2 - 4x - 5 < 0; x^2 - 4x - 5 = 0; D = 16 + 20 = 6^2; x1 = 5; x2 = - 1; (x+1)(x-5) < 0; + - + ______(-1)_____(5)______x x∈(-1; 5)