$\left(7-4i\right)\left(7-4i\right)$

$ln\left(\frac{1}{cos\left(x\right)}\right)$

$\lim_{x\to1}\left(\frac{e^{2\cdot\left(x-1\right)}-1}{\sqrt{4x^2-5x+1}}\right)$

$\left|-8\right|\cdot\left|-6\right|$

$\left(-\frac{1}{8}n-3m+2x\right)^2$

$\left|10+\left(-2\right)\right|\cdot\left(2-\left|\left(-8\right)+16\right|\right)$