$\int\:\left(9x-4\right)^5dx$
$\left(7-x^4\right)^2$
$\lim_{x\to\infty}\left(\frac{\sin\left(\frac{1}{x^2}\right)}{\frac{1}{e^{x.2}}-1}\right)$
$\left(-5\right)-\left(-5\right)-\left(-5\right)$
$-39\cdot17$
$\frac{x-x^{-1}}{x+x^{-2}}$
$10+5x-6$
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