They call it remainder theorem?

Algebra Level 5

If the remainder when polynomial

$\text{P}(x)=2x^5+x^3-2x^2-4x+5$

is divided by $x-1+\sqrt{2}$ can be written as $a-b\sqrt{c}$ , where $a$ , $b$ and $c$ are positive integers and $c$ is square free. Then find $a+b+c$ .