$\int\left(xcos^2\left(6x\right)\right)dx$
$3n-1>8$
$\left(a-8b\right)^2$
$f\left(x\right)\:=\:\left(1\:+\:\sqrt{r}\right)\left(r\:-r^3\right)$
$-4\left(3x-4v-1\right)$
$x^2-4xy+2y\:=\:4$
$\left(2x+y-4\right)\left(2x-y+4\right)$
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