Question

How do you simplify `(1-7i)^2`?

Answer 1

`=(1 - 7i)(1 - 7i)`

`=1 - 7i - 7i + 49i^2`

We know that `i^2 = -1`, so:

`=1 - 14i + 49(-1)`

`=1 - 14i - 49`

`=-48 - 14i`

Hopefully this helps!