$\lim_{x\to0}\left(5x^{sqrt\left(x\right)}\right)$

$x\left(x-1\right)^5$

$\left(-5\right).\:\:\:\left(+5\right)+\left(+2\right)-\left(4+6-1\right)$

$\csc\left(x\right)\:x\:\tan\left(x\right)$

$\frac{x^2-x-20}{x-5}$

$\lim_{x\to\infty}\left(\frac{3+3\left(7^x\right)}{9-3\left(7^x\right)}\right)$

$4\cdot15-8\left(-5\right)$