I am new here and I just want to ask if the following system has a general solution:
If $a$ $b$a, b and $c$c are given such that:
$$ x + y + z = a $$
$$ x^2 + y^2 + z^2 = b $$
$$ x^8 + y^8 + z^8 = c $$
Is Is there a way to find out if there exists a general solution to find $x$x, $y$y and $z$z?