$\lim_{x\to-\infty}\:\left(\frac{1}{2}x^5-x^3+1\right)$
$\int_{-\infty}^0\left(\frac{7}{2x-5}\right)dx$
$\frac{\int\left(z-2\right)^{3}}{z-2}dz$
$\lim_{x\to-\infty}\sqrt{x^4+x}-x^2$
$\left(45\right)\left(-3\right)$
$\frac{\log\left(14\right)+\log\left(15\right)+\log\left(8\right)}{\log\left(21\right)+\log\left(4\right)+\log\left(20\right)}$
$\lim_{x\to0}\left(\frac{\sqrt{49+h}-7}{h}\right)$
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