Simplifying
$2x^2-4x\:-\:1=0$
$\frac{2^{n+1\:}+2^{n+4\:}2^{n+2}}{22}$
$\frac{x-6}{3}\le x+4$
$\left(5x^4\right)^2-\left(70x^6\right)+\left(30x^5\right)+\left(7x^2\right)^2-\left(42x^3\right)+\left(3x\right)^2$
$\left(2x\:-\:6^2\right)$
$\int\frac{1}{8+x^{2\:}}dx$
$\left(7a-3b\right)\left(a+51\right)$
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