# Not so Subtle Roots

Algebra Level 3

$x^2+x+1 = 0$

The roots of the equation above are denoted by $r$ and $s$, while the roots of th equation below are denoted by $r^3$ and $s^3$.

$ax^2+bx+c = 0$

What is the value of $- \frac b a$?

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