# Maths

posted by
**Maths** on
.

Is given a function:

f(x)=x2 + px + q

Prove that:

f(x+1) + f(x-1)= 2+2 f(x)

posted by
**Maths** on
.

Is given a function:

f(x)=x2 + px + q

Prove that:

f(x+1) + f(x-1)= 2+2 f(x)