# SOLUTION: find the real number solutions for the equation 3x^4+15^2-72=0

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 Click here to see ALL problems on real-numbers Question 272153: find the real number solutions for the equation 3x^4+15^2-72=0Found 2 solutions by Alan3354, oberobic:Answer by Alan3354(30993)   (Show Source): You can put this solution on YOUR website!3x^4+15^2-72=0 x^2 = - 8 x = ± 2*i*sqrt(2) (complex numbers) ---------------- x^2 = 3 x = ± sqrt(3) (real numbers) Answer by oberobic(2304)   (Show Source): You can put this solution on YOUR website!I assume the problem is to solve: . Factoring, we arrive at: . Real solutions will be found where or . or . There are no real solutions for this part.