SOLUTION: If f(x) = x^2 + Ax + B, f(3) = 20, and f(-1) = 4, find f(2).

Algebra ->  Rational-functions -> SOLUTION: If f(x) = x^2 + Ax + B, f(3) = 20, and f(-1) = 4, find f(2).      Log On


   

Question 1096551: If f(x) = x^2 + Ax + B, f(3) = 20, and f(-1) = 4, find f(2).
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
You will get two equations, in the two unknown variables A and B. Solve that system.

system%281-A%2BB=4%2C9%2B3A%2BB=20%29

system%28-A%2BB=3%2C3A%2BB=11%29