$\lim_{x\to1}\left(\frac{1-x^2}{\left(1+ax^2\right)-\left(a+x^2\right)}\right)$
$x^2-14x-2$
$a^2+a-2>\frac{1}{2}$
$\left(3x^3\:-\:4xy^2\right)^5$
$\int_{10}^{100}\left(e^{2.775x}\right)dx$
$\int\frac{4}{5}\sin\left(2x+6\right)dx$
$\left(-68\right)\left(0.5\right)$
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