# Math Help - Polynomial Division

1. ## Polynomial Division

if a is in Q how would i show that f(a) is the remainder after dividing the polynomial f(x) by (x-a)?

2. Originally Posted by stephanderson
if a is in Q how would i show that f(a) is the remainder after dividing the polynomial f(x) by (x-a)?
If [LaTeX ERROR: Convert failed] is a polynomial of degree $n$ in $x$, dividing by $(x-a)$ leaves a quotient $G(x)$ of degree $n-1$ with remainder $R$ (a constant). That is [LaTeX ERROR: Convert failed] . If you put $x = a$, you will get $f(a) = R$.