SOLUTION: solve the equation x^4-13x^2+30=0. list the real solutions separated by commas?

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Question 1140844: solve the equation x^4-13x^2+30=0. list the real solutions separated by commas?
Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
.
Factor the given equation in this way


    x%5E4+-+13x%5E2+%2B+30 = %28x%5E2-10%29%2A%28x%5E2-3%29 = 0.


The roots are  x%5B1%5D = sqrt%2810%29,  x%5B2%5D = -sqrt%2810%29,  x%5B3%5D = sqrt%283%29,  x%5B4%5D = -sqrt%283%29.

Solved.

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In this case, refer to the problem's ID number 1140844.