$8x^226x+20$

$5x+7\le22$

$\left(m+2\right)\left(m-6\right)$

$f\left(x\right)=\left(3x\:5\right)^5$

$\left(x^6-1\right)\left(x^4-x^2+1\right)-3x^2\left(x^3+x^2\right)\left(x-1\right)$

$3\left(-14\right)+\left(-4\right)\left(-3\right)-4\left(6\right)$

$ax^6-5ax^4+ax^2$