$\lim_{x\to0}\left(\frac{\:log\left(1+x^3\right)}{\:sin^{3\:}x}\right)$
$\int\left(\frac{t^3+3t}{t^2-1}\right)dx$
$-21\:+\:2$
$4+16\cos\left(x\right)=10$
$-222+-49$
$\int arcotan\left(4t\right)dt$
$\left(b-2\right)\left(-2b^2-b+3\right)$
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