The modulus is given by the formula $\sqrt{a^2 + b^2}$, where $a$ and $b$ are the real and imaginary parts of the complex number respectively. In this case, $a = -5$ and $b = 5$. So, the modulus is $\sqrt{(-5)^2 + 5^2} = \sqrt{25 + 25} = \sqrt{50} = 5\sqrt{2}$.
Show more…