Mathematics 10 — Exercise Review · Q1 (ii)
Full question
Find the real part of the expression below. Choose the correct option.
| Option | Value |
|---|---|
| a | −3 |
| b | 1 |
| c | 4 |
| d | 13 |
Step-by-step solution
(2−3i)(2+3i) = 4 − 9i² = 4 + 9 = 13. Its real part is 13.
Answer
d: 13