$\frac{4}{3}\left(-\frac{6}{2}+2+\frac{5}{2}-6\right)$

$3^{-8}\cdot3^2$

$\left(3^2+5\right)-\left(\sqrt{16}+3\right)$

$\frac{dy}{dx}=\frac{cosx}{y}$

$a\left(t\right)=\left(5+t^2\right)^2\left(7-t^2\right)^4sin^7t$

$16+625x^2+300x+ax+180$

$\left(2x^2-3x\right).\left(-x^2+4\right)+8-3x^4+12x$