$\frac{sen2x+cos2xsen2x}{sen2xsen2x}$
$\frac{dx}{dy}=\frac{xy}{\sqrt{1+x^2}}$
$m^2n+mny$
$7x^2-4x-3$
$\left(4u-8+3v\right)\left(4u+5v-8\right)$
$\int\sin^5\left(10x\right)dx$
$\left(-3xy^2+2xy\right)^3$
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