Mathematics
OpenStudy (anonymous):

I need help solving a problem 15x^4-11x^2+2=0

OpenStudy (anonymous):

$x = ±\sqrt{\frac{2}{5}} \approx ±0.632456$ $x = ±\frac{1}{\sqrt{3}}\approx±0.57735$

OpenStudy (anonymous):

Let $z=x^2$ The equation is now $15z^2 - 11z +2=0$ Use the Quadratic Formula to find the roots of the equation: $z = (-b \pm \sqrt{b^2-4ac}) / 2a$ Then, the solution is $x=\pm \sqrt{z}$

OpenStudy (anonymous):

Using the above method, the roots are: $\pm \sqrt{10}/5, \pm \sqrt{3}/3$

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