## Online Course Discussion Forum

### Question about online summer camp 2021 Algebra blue group problem P6

Re: Question about online summer camp 2021 Algebra blue group problem P6

This is one of those problems where we can use the given equations to reduce some exponents.

Since you know that $a$ is a root of $x^4 -5x^2+3x+1$, then $a^4 - 5a^2 + 3a + 1 = 0$, that is, $a^4 = 5a^2 -3a -1$.