$\left(3a^3+2a-6b+10\right)-\left(-3a+5a^2-7a+4b-2\right)$
$\tan\:\left(\frac{\pi\:}{4}+\theta\:\right)\tan\:\:\left(\frac{\pi\:\:}{4}-\theta\:\:\right)$
$5x-\left(2x+4\right)+7$
$\frac{\sqrt{100}-\sqrt[4]{16}}{\sqrt[7]{0}}$
$4\left(-4c-9\right)-6$
$2+12+36$
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