$\int sen\frac{2x}{5}\:dx$
$4m^2-12+7n^2-4m^2+6n^2-3$
$\cot^2x\csc^2x\tan^2x$
$\left(5d+z\right)^3$
$\left(3-p\right)^3$
$\int\frac{\left(5x^3-3x^2+7x-3\right)}{\left(x^2+1\right)^2}dx$
$6x^3y-9nx^2y^3-3n^2x^4y^3$
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