$2x^3-6-11x-3x^2$
$-3\:-1\:-5\:+\:15\:-12$
$\left(m+5\right)\left(m-2\right)$
$26xy\left(-24y\right)$
$\left(-20\right)+\:\left(1\right)\:-\:\left(-4\right)$
$\lim_{a\to\infty}-1+\frac{1}{\sqrt{a^2+1}}$
$\left(2^x+2^{-x}\right)^4$
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