$8\sin^2\left(x\right)+3=7$
$4x^2\:+\:48y\:+\:12x\:-\:159\:=\:0\:$
$\ln\left(3xy\right)=x+x^5$
$\int z^2sen\left(4z\right)dz$
$\left(-7\right)\left(9\right)\left(-2\right)\left(-4\right)\left(-1\right)$
$8ab-1+3b+14-2ab$
$( 2 x - 3 x y ) ( 4 x ^ { 2 } + 6 x ^ { 2 } y + 9 x ^ { 2 } y ^ { 2 } )$
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