$b^5-b^3$
$-1387-2845$
$0.15+0.10+0.17+0.05+0.02+0.10+0.10+0.07+0.20$
$\int\frac{3\sec^4x\cos x}{2\tan^2x\cot x}dx$
$\lim_{x\to0}\left(\frac{3sin\left(8x\right)}{8sin\left(3x\right)}\right)$
$\left(x+3a\right)^7$
$7x\:+\:2\:-\:6x\:+\:x$
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