SOLUTION: I can't solve this. 15x^4 - 28x^2 + 5=0 The solution is x=_

SOLUTION: I can't solve this. 15x^4 - 28x^2 + 5=0 The solution is x=__

Question 480707: I can't solve this.
15x^4 - 28x^2 + 5=0
The solution is x=__
Found 2 solutions by emargo19, MathLover1:
Answer by emargo19(101) (Show Source): You can put this solution on YOUR website!
Let So

Using the Quadratic Formula:

So

and
and
and
and
and
remember so:
or
or
or

Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
..........replace with

......group

if
, then ...->.....->..
..->....->....->..
or

if
..->....->....->..
or

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