SOLUTION: can someone please help me...I'm really stuck. find real solution. x^4-10x^2+25=0 Thanks.. Caroline

Question 5273: can someone please help me...I'm really stuck.
find real solution.
x^4-10x^2+25=0
Thanks.. Caroline
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Solve:
x^4 - 10x^2 + 25 = 0 This can be factored into:
(x^2 - 5)(x^2 - 5) = 0 Apply the zero products principle:
x^2 - 5 = 0; x^2 = 5; so x = +-sqrt(5)
So you really get four roots:
Two of them are: and the other two are:
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