$4x\:+\:2\:-\:2x\:+\:6\:+\:6x$
$\lim_{x\to5}\left(x-5\right)$
$2\:x^{\left(2\right)}+5\:x<-x^{\left(2\right)}+1$
$-\frac{2}{5-4}i$
$\lim_{x\to1}\frac{4^x-3^x-1}{x^2-1}$
$\left(t-4p^2\right)\left(t+4p^2\right)$
$\left(\frac{1}{3}-m^2\right)^2$
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