Question

(x+7)*(x*1)≥0
Помогите​

Answer 1

(x+7)*(x*1)≥0

(x+7)*x≥0

_________

(x+7)*x=0

$x_{1} = - 7$

$x_{2} = 0$

__________

x∈(-∞;-7]∪[0;+∞)