$csc\left(2\right)j\:+\:cot\left(2\right)j$
$50-15+82-\left(-35\right)$
$\frac{3^{5x+15}}{3^{5x+15}}$
$x^6-36y^2$
$2x^2+5x+1=0$
$f+f$
$\frac{4\cot\left(u\right)-\tan\left(u\right)}{\cot\left(u\right)+\tan\left(u\right)}+1$
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