ОДЗ: 
0\;\; pri\;x\in R\\2x+1> 0,\;x > -\frac{1}{2}" alt="D=9-12=-3<0\; \to x^2+3x+3>0\;\; pri\;x\in R\\2x+1> 0,\;x > -\frac{1}{2}" align="absmiddle" class="latex-formula">
0\\x_1=-1,x_2=\frac{2}{3}\\x\in (-\infty,-1)U(\frac{2}{3},+\infty)
\\Otvet:\;x\in (\frac{2}{3},+\infty)" alt="x^2+3x+3<4x^2+4x+1\\3x^2+x-2>0\\x_1=-1,x_2=\frac{2}{3}\\x\in (-\infty,-1)U(\frac{2}{3},+\infty)
\\Otvet:\;x\in (\frac{2}{3},+\infty)" align="absmiddle" class="latex-formula">