$a^2+14a-49$
$2x\left(2x+5y\right)+2\left(2x+5y\right)$
$3 a + 8 b + 2 - 19 - 8 c - 4$
$14\cdot10^2-4\cdot10^2$
$\int\frac{2}{3}\left(1-x^2\right)^{\frac{3}{2}}dx$
$\left(-2a^4b^{-3}\right)$
$\lim_{x\to\infty}n^{.01}$
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