$+3-4+2-7+4-6-8+1$
$-8.635+6$
$\sqrt{x}\left(8-x^6\right)$
$\cos\left(2x\right)+\sin^2x=1$
$\left(5-1\right)\left(4-2\right)+\left(7-3\right)\left(4-1\right)$
$2t+1j$
$2an^3-8an$
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