I know I'm surrounded by a bunch of my fellow nerds here on CPF. Perhaps you can lend me some of your brains? I've been trying to crack this synthetic division problem for days. I tried every possible combination but still can't get the answer. Also tried googling it but found nothing useful. Here's the problem:
z^3 + 3z^2 - 2z + 3
-------------------- (the --- line means division)
z-i
...and the quotient is this, with remainder -3i/z-i:
z^2 + (3 + i)z + (-3 + 3i) + -3i/z-i
When attempting to divide this is what I got:
-i . 1 . . 3 . . -2 . . .3
. . . . . .-i . -1-3i .-3+3i
__________________
. . .1 . .3-i . -3-3i . .3i
Please ignore the dots as CPF doesn't allow excess spacing.
Which doesn't match the solution and the signs are the only thing different. No matter what I try I can't switch the signs without affecting something else. Tried factoring out a negative but that doesn't work. I either missed something or there's a rule I'm not aware of. Any help would be great!
z^3 + 3z^2 - 2z + 3
-------------------- (the --- line means division)
z-i
...and the quotient is this, with remainder -3i/z-i:
z^2 + (3 + i)z + (-3 + 3i) + -3i/z-i
When attempting to divide this is what I got:
-i . 1 . . 3 . . -2 . . .3
. . . . . .-i . -1-3i .-3+3i
__________________
. . .1 . .3-i . -3-3i . .3i
Please ignore the dots as CPF doesn't allow excess spacing.
Which doesn't match the solution and the signs are the only thing different. No matter what I try I can't switch the signs without affecting something else. Tried factoring out a negative but that doesn't work. I either missed something or there's a rule I'm not aware of. Any help would be great!
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