$25x^2+75xy+50y^2$
$9x^4+6x^3-5x^2+7;\:x=-2$
$\lim_{x\to1}\left(\ln\left(x^2\right)\right)^{x-1}$
$-26+2$
$\left(x-7y\right)\left(x+4y\right)$
$\int\frac{10}{\sqrt{16x^2+36}}dx$
$e^{3x}\frac{1}{x^1}$
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