# Math Help - polynomial function

1. ## polynomial function

Given a polynomial f(x) of degree 2, where f(x+1)-f(x)=6X-8 and f(1)=26, then what is f(2)

2. Originally Posted by math123456
Given a polynomial f(x) of degree 2, where f(x+1)-f(x)=6X-8 and f(1)=26, then what is f(2)
note that

$f(x + 1) = 5x - 8 + f(x)$

now, plug in $x = 1$ everywhere