Помогите с 5-6 уравнением!во вложениях!

Решите задачу:

$|2x^2-x|\ \textgreater \ 3\\\\ \left \{ {{2x^2-x\ \textgreater \ 3} \atop {2x^2-x\ \textless \ -3}} \right. \; \left \{ {{2x^2-x-3\ \textgreater \ 0} \atop {2x^2-x+3\ \textless \ 0}} \right. \; \left \{ {{2(x+1)(x-\frac{3}{2})\ \textgreater \ 0} \atop {D=-23\ \textless \ 0,\to x\in (-\infty ,+\infty )}} \right. \; \left \{ {{x\in (-\infty ,-1)\cup (\frac{3}{2},+\infty )} \atop {x\in (-\infty ,+\infty )}} \right. \\\\x\in (-\infty ,-1)\cup (\frac{3}{2},+\infty )$

$|x^2-x| \leq 3x+5\\\\ \left \{ {{x^2-x \leq 3x+5} \atop {x^2-x \geq -3x-5}} \right. \; \left \{ {{x^2-4x-5 \leq 0} \atop {x^2+2x+5 \geq 0}} \right. \; \left \{ {{(x+1)(x-5) \leq 0} \atop {D=-16\ \textless \ 0\to x\in (-\infty ,+\infty )}} \right. \\\\ \left \{ {{x\in [\,-1,5\, ]} \atop {x\in (-\infty ,+\infty )}} \right. \; \to \; \; x\in [\, -1,5\, ]$