Grace Wilkerson
New member
- Joined
- Oct 10, 2011
- Messages
- 3
I worked this problem and came up with the answer -1/2 + 2i and this is different than the answer in the book -1/2 - 2i. I think the book is wrong. Can you help?
8i4 - 4i3 - 6i
-3i3 + 5i - square root of -16
Here's my work:
8 + 4i - 6i
3i + 5i - 4i
8 - 2i
4i
8 2i
4i - 4i
2i - 1/2 = -1/2 + 2i
8i4 - 4i3 - 6i
-3i3 + 5i - square root of -16
Here's my work:
8 + 4i - 6i
3i + 5i - 4i
8 - 2i
4i
8 2i
4i - 4i
2i - 1/2 = -1/2 + 2i
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