SOLUTION: If y=2x^4-36x^2, what are the points at which the tangent to the curve is parallel to the x-axis?

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Question 341884: If y=2x^4-36x^2, what are the points at which the tangent to the curve is parallel to the x-axis?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
If y=2x^4-36x^2, what are the points at which the tangent to the curve is parallel to the x-axis?
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y = 2x^4-36x^2
y' = 8x%5E3+-+72x+=+0
x = 0
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8x%5E2+-+72+=+0
x = ± 3