$\:\sqrt{\frac{2}{2}}+24.47$
$3x\:-8\:+9\:-5x$
$\left(3m-n^3\right)^3$
$\left(6b-5\right)\left(b+1\right)$
$18x^2-3x-6$
$x=\sqrt{2x+7}-2$
$\sec\left(x\right)-\tan\left(x\right)=\sec\left(x\right)-\cos\left(x\right)$
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