Answer: The real part of the complex number is 0.
Explanation:
Complex numbers are always in the format: a + bi
On the given complex number, -i√5 , it is representing the "bi" part of the standard complex number expression.
We are looking for the real part. The real part is the real number. Since -i√5 doesn't show a real part, we can infer that its real part is 0.
If you rewrite the expression with 0 as the real number, it is equivalent to the principle of the original:
0 + -i√5
This concept is similar to the idea:
y = mx + b
if the equation said:
y = 3x
we know that b is 0, although its not stated. This principle is used in complex numbers.
Thank you.