Exercício Resolvido de Inequações
e)
\( 4x^{2}+4x+1>0 \)
\[
\begin{gathered}
4x^{2}+4x+1=0\\[5pt]
\Delta=b^{2}-4ac=4^{2}-4.4.1=16-16=0\\[5pt]
t=\frac{-b\pm \sqrt{\Delta\;}}{2a}=\frac{-4\pm\sqrt{0\;}}{2.4}=\frac{-4}{8}\\[5pt]
x=-{\frac{1}{2}}
\end{gathered}
\]
\[ \bbox[#FFCCCC,10px]
{V=\mathbb{R}-\left\{\frac{1}{2}\right\}}
\]