SOLUTION: I need help!! How would you solve {{{x^2+80=0}}} using a+bi?

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Question 109955: I need help!! How would you solve x%5E2%2B80=0 using a+bi?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
How would you solve x%5E2%2B80=0 using a+bi?
:
How about this:
x%5E2+=+-80
:
x+=+sqrt%28-80%29
:
Think of it like this, remember i^2 = -1
x+=+sqrt%2816%2A5%2Ai%5E2%29
:
Extract the square roots:
x+=+4i%2Asqrt%285%29
:
In the a + bi form
x+=+0+%2B+4sqrt%285%29i