Question

-x²-6x-5≥0
Срочно помогите!

Answer 1

$-x^2-6x-5 geq 0\ x^2+6x+5 leq 0\ x^2+6x+9-4 leq 0\ (x+3)^2-2^2 leq 0\ [(x+3)-2]*[(x+3)+2] leq 0\ (x+1)(x+5) leq 0\ [x-(-5)]*[x-(-1)] leq 0\\ xin[-5; -1]$