SOLUTION: On a problem like x2 + 16. How do you find all the zeros?

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Question 249782: On a problem like x2 + 16. How do you find all the zeros?
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
On a problem like x^2 + 16 = 0 How do you find all the zeros?
:
A problems like this has no real roots, so it has no zeros
x^2 + 16 = 0
x^2 = -16
x = +/-sqrt%28-16%29 square root of a neg not real
but can be written
x = +/- 4i
:
You can graph this and see y never = 0
+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+50%2C+x%5E2%2B16%29+