$6\left(30-3\right)$

$n^2+13n+36$

$x^2-1\cdot x^2+3x+2$

$\int\frac{\ln\left(x\right)\sqrt[4]{1+3\ln^2\left(x\right)}}{x}dx$

$\int\frac{5}{\left(x+3\right)\left(x-3\right)}dx$

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

$\left(-17\right)-\left(-21\right)-\left(-8\right)+\left(-54\right)-\left(96\right)$