$cos2x+3cosx+2=0$
$\lim_{n\to\infty}\left(4-\left(-\frac{1}{3}\right)^n\right)$
$\left(8x^2+9m^3\right)^3$
$\int\frac{1}{x\sqrt{x^{2}+25}}dx$
$\left(x-2\right)^{4+2}$
$4a^2-12am$
$64ax^2-49ay^2$
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