I just came across a question in my paper that asks me to solve for $x$ in $10x^4-13x^2+4=0$
I've only learned how to factorize quadratics and the quadratic formula, but I'm not sure how to factorize quartics. Is there a way that I can apply my current knowledge to solve for this problem or if not, how would I be able to solve it?
For reference, the answer is $(5x^2-4)(2x^2-1)$ and therefore $x^2=0.8$ or $0.5$