Question

What does `(2-i)(4+2i)+3i` equal in a + bi form?

Answer 1

I found: `10+3i`

Explanation:

First multiply:
`8cancel(+4i)cancel(-4i)-2i^2+3i=`
remember that `i^2=-1`
so:
`=8+2+3i=`
`=10+3i`