SOLUTION: Solve. 6x^4-19x^2+15=0 Thanks!

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Question 222400: Solve. 6x^4-19x^2+15=0
Thanks!
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Hint: If you let z=x%5E2, then z%5E2=x%5E4. So you can substitute 'z' for x%5E2 and z%5E2 for x%5E4 to get 6z%5E2-19z%2B15=0. From there, use the quadratic formula to find 'z'. Once you have solutions in terms of 'z', use the equation z=x%5E2 to find solutions in terms of 'x'.