$2x^4-3x^2-2;\:x=2$
$\frac{x^4-3x^3-5x^2+7}{x-2}$
$2y\:dx\:+\:e^{-3x}\:dy\:=0$
$\lim_{x\to\infty}\left(\frac{2e^{2x}-1}{2x}\right)$
$-\left(7+4\right)+14-\left(-5+6\right)+\left(4+7-13\right)$
$3-\left(-4\right)+\left(-2\right)-6$
$\int5x^{-7}dx$
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