InterviewSolution
Saved Bookmarks
| 1. |
Simplify the following and express in the form a + ib.(1 + 3i)2 (3 + i) |
|
Answer» (1 + 3i)2 (3 + i) = (1 + 6i + 9i2)(3 + i) = (1 + 6i – 9)(3 + i) ……[∵ i2 = -1] = (-8 + 6i)(3 + i) = -24 – 8i + 18i + 6i2 = -24 + 10i + 6(-1) = -24 + 10i – 6 = -30 + 10i |
|