$x=5\sin^2\left(1.5\right)-8\cos^5\left(1.5\right)$

$\frac{d^2}{dx^2}\left(\frac{2x+5}{\left(x^2+4\right)^3}\right)$

$\lim_{x\to\infty}\left(\frac{x^2+5x-6}{x+1}\right)$

$\left(5m^2+2n\right)^3$

$2\left(-5\right)-7\left(3-5+2\right)-2\left(3\left(3\right)-1\right)$

$cot\left(x\right)+\frac{1-2cos^2\left(x\right)}{sin\left(x\right)cos\left(x\right)}$

$b^2+8b+16$