SOLUTION: Question: x^4-6x^2+5=0

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Question 30350: Question:
x^4-6x^2+5=0

Answer by mukhopadhyay(490) About Me  (Show Source):
You can put this solution on YOUR website!
Let x^2 = y
So, y^2 - 6y + 5 = 0
=> (y-5)(y-1) = 0
=> y = 5 or y = 1
Substituting y = x^2,
x^2 = 1 or x^2 = 5
=> x = +1 or x = -1 or x = sqrt(5) or x = - sqrt(5)