$\:y'-\frac{1}{x}y=1$
$secx=-4$
$a-2b+2c=2$
$\left(6\cdot16\right)+\left(3\cdot16\right)$
$b^2+3b-70$
$\int\left(8x-1\right)^{-1}dx$
$\left(7+5m^3\right)^2$
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