$f^2+7f-450$
$\cos\left(\pi-a\right)\cot\left(\frac{\pi}{2}-a\right)$
$\frac{\cos\left(60\right)}{\sin\left(60\right)}=\cot\left(60\right)$
$y-1>9-4y$
$b^2-6b-40$
$\int\frac{2e^z}{e^z+1}dz$
$16x^4-a^4$
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