Question 947973
{{{(x^4 + 5x^2 - 36)(2x^2 + 9x - 5) = 0}}}
{{{(x-2)(x+2)(x^2+9)(x+5)(2x-1) = 0}}}
So then the roots are,
{{{x=2}}}
{{{x=-2}}}
{{{x=3i}}}
{{{x=-3i}}}
{{{x=5}}}
{{{x=1/2}}}