# How do you find the absolute value of -2-i?

$| - 2 - i | = \sqrt{5}$
Absolute value of a complex number $a + i b$ is written as $| a + i b |$ and its value as $\sqrt{{a}^{2} + {b}^{2}}$.
Hence, absolute value of $- 2 - i$ is $\sqrt{{\left(- 2\right)}^{2} + {\left(- 1\right)}^{2}} = \sqrt{4 + 1} = \sqrt{5}$.