$\int_{-\infty}^0\left(\frac{1}{4x^2+9}\right)dx$
$-5465+123$
$22\cdot22$
$\int_0^1\sqrt[2]{1+\frac{x^2}{2-x^2}}dx$
$\left(\sqrt{2b^3}\right)^6$
$\log\left(x^2+4\right)=3log\left(2\right)$
$\lim_{x\to4}\left(\frac{4x-2x^2}{2x^2-x-12}\right)$
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