Question

if f(x) =4x power of 2 - x+ 1 then find the value of (f(2) - (f (1)​

Answer 1

Answer:

at x=2

f(2)= 4(2)^2-2+1 = 4(4)-2+1 = 15

now , at x =1

f(1)= 4(1)^2-2+1 = 4-2+1 = 3

as per ques.

f(2)- f(1) = 15-3 = 12