Question

Resolva
A)|x²|+4|x|+3≥0
B)|x²-3x|≤1
Me ajudem pfvr

Answer 1

a)
x²+4x+3≥0
x²+3x+x+3≥0
x.(x+3)+x+3≥0
(x+3).(x+1)≥0
{x+3≥0
{x+1≥0
{x+3≤0
{x+1≤0
{x≥-3
{x≥-1
{x≤-3
{x≤-1
xE{-∞,-3}U{-1,+∞}