How do you simplify #3+7i-3i-4#?
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
Therefore we are going to join the like terms for this problem:
Then it is simple addition and subtraction
Putting them in one line and you will get:
Hope that answered your question :)