$x^2-16x+4=0$

$\frac{5\sqrt{m^2n^2}}{2}+\frac{3\sqrt{6+y}}{4}-\sqrt[3]{p}$

$\lim_{x\to0}\left(1+\frac{7}{x}\right)^{4x}$

$\frac{x-2}{x-3}>2$

$\left(x-18\right)\left(x+12\right)$

$\frac{x+5}{x-2}=\frac{5}{x+2}+\frac{28}{x^2-4}$

$\lim_{x\to0}\left(\frac{sinx}{4.3x}\right)^{\frac{1}{x}}$