$4x^3-5^2-4x+5$

$\int_1^{-1}\pi dx$

$\frac{\left(1+sin\left(x\right)\right)}{cos\:\left(u\right)}+\frac{cos\left(u\right)}{\left(1+sin\left(x\right)\right)}$

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

$\left|-32+5\cdot8-20\right|$

$3+\left(-2\right)-\left(-2\right)+\left(-4\right)$

$32\cdot2$