$\lim_{x\to0}\left(\frac{x+tan\left(x\right)}{sin\left(x\right)}\right)$
$\frac{1}{27}x^3-\frac{2}{3}x^2+4x-8$
$\int-3\cos\left(\frac{x}{3}\right)dx$
$\left(4mn^2r+6mnr^2\right)^3$
$\int t^4\left(3+t^5\right)dt$
$\cos\left(2x\right)+\sqrt{3}\cdot\sin\left(2x\right)=1$
$\sin\left(-a\right)=\sin\left(a\right)$
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