$\left(3w-2\right)^2$
$\pi\pi\pi$
$\frac{x\left(x+3\right)}{5}-1=\frac{x+2}{4}$
$20+7+20+12$
$3.1416\cdot16$
$\lim_{x\to0}\left(\frac{x^2-\sqrt{5x^2-4}}{2x^2-3x-2}\right)$
$\int\left(sen2a\right)da$
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