SOLUTION: What is the x- intercept if you are given y=2x^2+8. Find x intercept?

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Question 1079767: What is the x- intercept if you are given y=2x^2+8. Find x intercept?
Found 2 solutions by Fombitz, ikleyn:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Set y=0 solve for x.
0=2x%5E2%2B8
x%5E2%2B4=0
%28x%2B2i%29%28x-2i%29=0
So,
x%2B2i=0
x=-2i
and
x-2i=0
x=2i

Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.
Definition:   an x-intercept is a point on the graph where y is zero.


Answer:     There is  NO  x-intercept in real domain:


graph%28+330%2C+330%2C+-5.5%2C+5.5%2C+-2.5%2C+15.5%2C%0D%0A++++++++++2x%5E2%2B8%0D%0A%29

Plot y = 2x%5E2%2B8