Решить неравенство x^2+7x-8=>0

Question

Решить неравенство
x^2+7x-8=>0

Answer 1

X^2+7x-8≥0
(x+8)(x-1)≥0
            +                                 -                               +
_____________-8________________1____________

x∈(-∞;-8]∨[1;+∞)