Question

2x+7≤2 x^{2} +8x+11 urgent

Answer 1

$2x+7 \leq x^{2} +8x+11$
$0 \leq x^{2} +8x-2x+11-7$
$0 \leq x^{2} +6x+5$
acum faci cu delta si obtii x1=-5 si x2=-1 
xE R\(-5,-1)