$+9-8-7+3-\left\{-4-\left[+4\right]-8\right\}-\left(+4-3\right)$
$x^2+x+16$
$\log\left(25\right)+\log\left(3x-2\right)=2$
$144m^4x^4-24am^2x^2+1a^2$
$\lim_{x\to0}\left(x^{1-\cos\:\:\left(x\right)}\right)$
$1,3-0,4$
$-\left(-3\right)\left(-4\right)$
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