Question

How do you simplify `-3i(2-5i) - (7+i)`?

Answer 1

`-(22 + 7i)`

Explanation:

`-3i(2-5i) - (7+i) = -6i + 15i^2 -7 - i`
`= -7i + 15(-1) -7`
`= -7i - 15 -7`
`= -7i - 22`
`or, -(22 + 7i)`