$\int\:7u\:\cos2u\:du$
$65-15x$
$\left(1-\tan\left(a\right)\tan\left(b\right)\right)$
$7x\:+\:6x\:-\:178\:=\:82$
$\left(2m^2+5n^3\right)^2$
$6\left(-2\right)^2$
$3,18\:+\:144\:-\:15,723\:$
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