$2^{1-x}=8$
$\left(x-\frac{9}{5}\right)^2$
$\sqrt{\frac{1}{3u^3v}}$
$2\tan-\sec^2$
$\int sech\left(x\right)tanh\left(x\right)dx$
$3\cos\left(55\right)-1=0$
$v-5>-4$
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