$\lim_{x\to-x}-4x^4-7x+5$
$-156\:-\:\left(-45\right)$
$-\left(10-8-6+4\right)^{21}$
$\sqrt[6]{91-27}$
$\frac{x}{3}>1$
$25a^2\:-\:100\:$
$5\sec^2\left(x\right)\left(1-\sin^2\left(x\right)\right)$
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