неравенства - Решите систему неравенств

1) $%4\frac{x^2(x+1)}{(x-1)^2} \le 9\frac{x+1}{(x-1)^2}\Leftrightarrow \begin{cases}x\ne 1 \\ (x+1)(4x^2-9)\le0\end{cases}\Leftrightarrow x\in (-\infty;-1.5]\cup [-1;1)\cup(1;1.5]$%

2)$%|x^2-\frac{29}{12}x-\frac{35}{12}|\ge 2x^2-\frac{61}{12}x-\frac{19}{12} \Leftrightarrow \left[ \begin{aligned} x^2-\frac{29}{12}x-\frac{35}{12}\ge 2x^2-\frac{61}{12}x-\frac{19}{12} \\ x^2-\frac{29}{12}x-\frac{35}{12}\le -2x^2+\frac{61}{12}x+\frac{19}{12} \end{aligned}\right. \Leftrightarrow $%

$%\Leftrightarrow \left[ \begin{aligned} 3x^2-8x+4\le0 \\ 2x^2-5x-3\le 0 \end{aligned}\right.\Leftrightarrow \left[ \begin{aligned} x\in[\frac23;2] \\ x\in [-\frac12;3] \end{aligned}\right.\Leftrightarrow x\in [-\frac12;3]$%

3)$% ((-\infty;-1.5]\cup [-1;1)\cup(1;1.5])\cap [-\frac12;3]=[-\frac12;1)\cup(1;1.5]$%