Question

Simplify the expression to a + bi form:
(8 + 10i) - (9+9i)

Answer 1

`→(8 + 10i) - (9 + 9i) \\ = 8 + 10i - 9 - 9i \\ = 8 - 9 + 10i - 9i \\ = \boxed{- 1 + i}✓`

• - 1 + i is the right answer.

Answer 2

-1+i

Explanation:

(8+10i)-(9+9i)

8+10i-9-9i

8-9+10i-9i

-1+10i-9i

-1+i