$4^2+12x+9$
$f\left(x\right)=\sin\left(8x-2\right)$
$\lim_{x\to5}\left(\frac{\sqrt{25-x^2}}{x}\right)$
$-8\:times\:-8$
$y - \frac { x ^ { 2 } + 1 } { 3 x + 2 }$
$-3-\left(-4\right)+\left(-2\right)-\left(-6\right)$
$\left(9y+7z\right)^3$
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