$\frac{d}{dx}coshx=\frac{e^x+e^{-x}}{2}$
$36x^2-40x+13$
$x^2-25+3x^2+4x-5$
$1.1\:-\:0.9\:+\:4t\:+\:\left(-t\right)$
$-6-\left(+5-\left|6-\left(-2+5\right)-5\right|-8\right)-2$
$\infty\cdot0.1$
$lnx^{\left(\frac{1}{x}\right)}$
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