Question

How do you find the product of the complex number and its conjugate of `-7+sqrt(13i)`?

Answer 1

`62`

Explanation:

The given complex number is `-7+isqrt13`
The conjugate of the given number is `-7-isqrt13`

The product=`(-7+isqrt13)(-7-isqrt13)=(-7)^2-(isqrt13)^2=49-13i^2=49-(-13)=49+13=62`