When substitute in 3 and 2 in equation
p(3) = 3^2 + b*3 + c --(1)
p(2) = 2^2 + b*3 + c --(2)
From 1 and 2 above, using equation p(3) – p(2) = 7 you get b=2
Similarly substituting 4 and 2 in the required equation with b=2 you get 9.
What is OA?
dtweah wrote:Given the quadratic p(x) = x2 + bx + c, if p(3) – p(2) = 7 then
p(4) – p(3) equals
(a) 9
(b) 11
(c) 14
(d) 21
(e) cannot determine from the given data.
