SOLUTION: f(x)=x^2-2, then f(x+2)-f(x)=?????

Algebra ->  Algebra  -> Exponents-negative-and-fractional -> SOLUTION: f(x)=x^2-2, then f(x+2)-f(x)=?????      Log On

Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help!
Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

   

Question 95250: f(x)=x^2-2, then f(x+2)-f(x)=?????
Answer by stanbon(48569) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)=x^2-2, then f(x+2)-f(x)
----------
f(x+2) = (x+2)^2-2
= x^2+4x+2
--------
f(x)=x^2-2
----------
Subtract f(x) from f(x+2) to get:
f(x+2)-f(x) = 4x+4
==============
Cheers,
Stan H.