How do I show that this (see below) has no solutions?

$\displaystyle 2+b^3\equiv b \ (\text{mod} \ 5)$

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- Oct 5th 2011, 11:08 AMdwsmithMod 5
How do I show that this (see below) has no solutions?

$\displaystyle 2+b^3\equiv b \ (\text{mod} \ 5)$ - Oct 5th 2011, 11:19 AMTheEmptySetRe: Mod 5
- Oct 5th 2011, 11:34 AMdwsmithRe: Mod 5