$1-20+1-\frac{198}{1}$
$3\sqrt{-27}$
$\frac { - x ^ { 3 } } { 3 } | _ { - 1 } ^ { 1 }$
$6x-6=4x+8$
$-5x<30$
$m^8-\frac{4}{4}m^4$
$\frac{sen^2\left(x\right)-tan^2\left(x\right)}{csc\left(x\right)}=sen\left(x\right)$
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