Find the break even points of the expression $\sqrt{2\cdot 2\sqrt{5-3\sqrt{20}}}$

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

$classify\left(\left(2\right)\left(-1\right) a^2\cdot b\right)$

$classify\left(\left(6\right)\left(-1\right)\cdot a+a\right)$

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

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

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

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