x_{1} =-1, x_{2}= \frac{1}{3} \\ x (-1; \frac{1}{3} )" alt="3 x^{2} +2x-1<0 \\ 3 x^{2} +2x-1=0 \\ a-b+c=0 \\ => x_{1} =-1, x_{2}= \frac{1}{3} \\ x (-1; \frac{1}{3} )" align="absmiddle" class="latex-formula">
x_{2} =1, x_{3}=6 \\ x(- \infty;0] u [1;6]" alt=" x^{3} -5 x^{2} +6x \leq 0 \\ x^{3} -5 x^{2} +6x=0 \\ x( x^{2} -5x+6)=0 \\ x_{1} =0 \\ x^{2} -5x+6=0 \\ a+b+c=0 \\ => x_{2} =1, x_{3}=6 \\ x(- \infty;0] u [1;6]" align="absmiddle" class="latex-formula">