$\frac{\left(-1\right)^nx^n}{n^25^n}$
$a^2+a^2h^2$
$\frac{4-1\cdot2\cdot p}{p^4-1\cdot2p^3+2p^2+1}$
$\left|1\:\right|$
$sin^2\left(30\right)^1+\cos^2\left(30\right)$
$\cos\left(x\right)\cos\left(y\right)+\sin\left(x\right)\sin\left(y\right)-\left(\cos\left(x\right)\cos\left(y\right)+\sin\left(x\right)\sin\left(y\right)\right)$
$\frac{dy}{dx}=\:70e^{-4t}+25e^{-2t}$
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