$\left(7+\right)-\left(-1\right)$
$-25\cdot7$
$\lim_{x\to-1}\left(\frac{x+1}{\sqrt{x-5\:}-2}\right)$
$x^2-6x-2=0$
$\left(\frac{x}{y}+\frac{3}{z}\right)\left(\frac{x}{y}+\frac{3}{z}\right)$
$48a^2+24a+3$
$\int\frac{x^3+3x^2+5x-2}{x^2}dx$
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