$2\sin\left(x\right)^2\tan\left(x\right)-\sin\left(x\right)^2=0$
$5u\:-4u$
$\left(2^2\:+\:x^3\right)$
$f\left(-3\right)=-6x^2+9x-3$
$-\left(30+y+z\right)$
$\ln\left(m\right)=w-8$
$\lim_{x\to3.14}\left(\frac{3\sin\left(x\right)}{8\cos\left(x\right)+8}\right)$
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