$\int\frac{4x-2}{x^2+x+5}dx$
$a^2-16a-64$
$5x+24=2x+9$
$3\cdot\left(4+5\right)-\left|2\cdot\left(3-5\right)-\left(6-7\right)\right|$
$2\left(4x-1\right)+x$
$\cos\left(2x^2+2\right)$
$2x-7;x=0$
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