$-15\cdot\left(-14\right)$
$\int_0^1\left(12e^{-4x}\right)dx$
$x^2-12x+36=11$
$x+3\left(x^3-x^2+2\right)$
$\frac{-5x^2-x^4+x^2-2}{x^2+1}$
$\lim_{x\to9}\left(\frac{\sqrt{2}-2}{\sqrt{x+2}-x}\right)$
$\lim_{x\to1}\left(\frac{x^2+x-2}{x^2+4x+4}\right)$
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