$\int2+\tan\:^2\left(x\right)dx$
$\:3\left(m-11\right)-2x\left(m-1\right)$
$\left(senx\:+\:cos\:x\right)^4$
$x-\left(x+3\right)^2=-5$
$c ( x + 4 ) ^ { 2 }$
$7a^2+4a^2+a^2$
$u\left(u\:-\:12\right)$
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