$6.6\cdot10^{-4}\cdot7\cdot10^9$

$\lim_{x\to0}\left(\frac{cos\left(cos\left(x\right)\right)-1}{2x^2}\right)$

$\lim_{x\to\infty}\left(\frac{12x-\frac{1}{2}}{12x-\sqrt{16x^2-5x}}\right)$

$\left(1\right)^5-4\left(1\right)^4+10\left(1\right)^2-\left(1\right)-6$

$64z^2+79z+15$

$4x^6+4x^3+4$

$\int\left(sec14xtan14x\right)dx$