### Home > INT3 > Chapter 9 > Lesson 9.1.3 > Problem9-35

9-35.

If $a = 2 + 3i$ and $b = 1 – i$, complete each of the following operations:

1. $a + b$

Substitute the given expressions for $a$ and $b$ appropriately and combine like terms.

1. $a – b$

Follow the same method from part (a).
Don't forget to distribute the negative/minus sign.

1. $ab$

Expand as you would any other polynomial.

$5 + i$