Find the break even points of the expression $\frac{1}{2\pi }\ln\left(\frac{10^2}{16\cdot \left(\frac{127}{1000}\right)\cdot \left(\frac{17}{20}\right)}\right)+\frac{1}{\pi }\ln\left(\frac{3}{4}\cdot \frac{5}{6}\cdot \frac{7}{8}\right)$

$classify\left(x^2-x^3+1-1\cdot 4\cdot x\right)$

$classify\left(x^2+1-1\cdot 4\cdot x\right)$

$classify\left(x^2-x^3-1\cdot 4\cdot x\right)$

$classify\left(3m^2-2m\cdot n+5n^2\right)$

$classify\left(x^2+1-4\cdot x\right)$

$classify\left(x^2-4\cdot x\right)$

$classify\left(-x^3\cdot y\right)$