$\int\left(x\cdot\sqrt{-5x-4}\right)dx$
$a^2-a+30$
$-12x-8x-7x-2x$
$-4c+2b+8b+3$
$\left(\sqrt{5}+2\right)\left(\sqrt{5}-2\right)$
$2+2\cdot5$
$\csc\left(b\right)\left(\csc\left(b\right)-\sin\left(b\right)\right)$
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