$\frac{\left(e^{-1-h}-e^{-1}\right)}{h}$
$-7\left|2\right|$
$\int\frac{1}{x^2\sqrt{x^2-196}}dx$
$-2^3-\left(-4\right)$
$\frac{7}{3}x^3+\frac{9}{2}x^2+5x$
$1\:2\:a\:x\:+\:5\:3\:a\:x$
$-5+0.25$
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