$\int\cos^4\left(\frac{x}{3}\right)dx$
$\lim_{x\to0}\left(\frac{1}{ln\left(x+1\right)}\right)-\left(\frac{1}{x}\right)$
$\left(3ab^2+c\right)^2$
$c^7d^8+c^2d^4$
$-6xy^2\cdot\left(3xy\right)+2xy^3$
$\left(3n+4\right)^3$
$-3+\left(-5\cdot2+10-3\right)$
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