$\frac{\left(1-\cos\left(2x\right)\right)}{sin\left(2x\right)}+\frac{sin\left(2x\right)}{1+cos\left(2x\right)}$
$\frac{2}{4+4x}$
$3x\:-\:y\:+\:7\:+\:10m\:-\:17\:$
$\left(\frac{626}{a^8}\right)^{\frac{-3}{4}}$
$9x^2+15x+4$
$\int3x^4\ln^{5x}dx$
$-36+-22$
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