$\left(a+b\sqrt{-1}\right)^4$
$\left(\frac{2}{5}ab-\frac{3}{4}b^2\right)^2$
$\left(3m-\frac{1}{3}\right)^2$
$cos^2\theta+cos\theta=2$
$\left(10x+12y^3\right)\left(10x-12y^3\right)$
$f\left(x\right)=cos3xlnx^{4\:}$
$\int\:sen\left(\frac{x}{3}\right)sen\left(\frac{x}{17}\right)dx$
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