$x^2+6x+10$
$\int tan^25xdx$
$25x^2-20xy$
$\lim_{x\to0}\left(\frac{cos\left(8x\right)}{x^2}-1\right)$
$\left(\sqrt{9x^2+3x}\:\right)^2\:-\:3x^2$
$\frac{17}{9}m^2n^2-\frac{11}{6}m^2n^2$
$25a^2x^2-30axy+9y^2$
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