SOLUTION: Ok, so I am asked to write a quadratic equation based on the answer given. I have already done it, but someone is telling me I am wrong, and when I did it again, I came up with a

Question 223641: Ok, so I am asked to write a quadratic equation based on the answer given. I have already done it, but someone is telling me I am wrong, and when I did it again, I came up with a completely different answer! So confused. Anyway, the problem is:
3i , -3i
Here are my original steps:
x-3i =0 or x+3i =0
(x-3i ) (x+3i ) =0
-9+2=0
+9+2=0
+11=0
The second time around I multiplied 9 and 2, coming up with +18=0
I am kind of confused on what to do with the square root value. Do you add it to the equation, as I did the first time, or do you multiply, as I did the second time?
Thank you.
Answer by tutor_paul(519) (Show Source): You can put this solution on YOUR website!
You got the right answer the second time...
(x-3i)(x+3i)=0

===================
Good Luck,
tutor_paul@yahoo.com

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