$x+\frac{1^8}{x}$

$24x^2-86x+72=0$

$\frac{cos\left(5x\right)+cos\left(3x\right)}{sin\left(5x\right)-sin\left(3x\right)}$

$x^2-16x+64=0$

$\lim_{x\to0}\left(\frac{\left|x^2-9\right|}{\left|x-3\right|}\right)$

$4q-5q+10q+9$

$2^{14}\cdot2^{-11}-\left(-2\right)^{15}\cdot\left(-2\right)^{-13}$