$\lim_{x\to b}\:\frac{x\left(x^2+2bx-3b^2\right)}{x^2-bx-2b^2}$
$\left(-22\right)\:-\:\left(-23\right)\:+\:\left(+15\right)\:+\:\left(-13\right)\:+\:\left(-17\right)$
$\cos\left(x\right)-\sin\left(x\right)=-\frac{\sqrt{3}}{2}$
$\int\frac{8}{\sqrt{-1+x^2}}dx$
$\int\frac{\cos3x}{\sqrt{1-2\sin3x}}dx$
$\left(b-2\right)\left(b+5\right)$
$\frac{1023}{3}$
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