Question

How do you simplify `3+7i-3i-4`?

Answer 1

`4i-1`

Explanation:

When you are simplifying a polynomial, you have to remember that you are finding the LIKE TERMS. This means the i after the 7 and the other number with nothing after it are from two different families. Just like if you have a `i^2 or i^3` they are from different families and must be sorted differently.

Therefore we are going to join the like terms for this problem:
`3-4`
`7i-3i`

Then it is simple addition and subtraction
`-1`
`4i`

Putting them in one line and you will get:
`4i-1`

Hope that answered your question :)