$4+2x\le3x+5$

$54\cdot2$

$\left(13x^n\right)\left(-2x^ny\right)\left(2y\right)$

$\left(0.0064\cdot\left(54\cdot1.5151\right)^{-2}\right)^{-1}$

$\lim_{x\to\infty}\left(\frac{\pi^2+\sin\left(\pi\right)-\pi^2}{\cos\left(\frac{\pi}{2}\right)}\right)$

$32+x+x-4$

$\left(8x^{a+2}-3y\right)\left(8x^{a+2}+3y\right)$