SOLUTION: 15x^4-28x^2+5=0

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Question 323450: 15x^4-28x^2+5=0
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
15x^4-28x^2+5=0
(5X^2-1)(3X^2-5)=0
5X^2-1=0
5X^2=1
X^2=1/5
X=SQRT1/5
X=.4472 ANS.
3X^2-5=0
3X^2=5
X^2=5/3
X=SQRT5/3
X=1.29 ANS.