Question

Evaluate the following functions:
1. If f(x) = 22 - 2x + 1, find
(a) f(2)
(b) f(V5)
(c) f(-1+ 2)
(d) f(2w + 1)​

Answer 1

Answer:

i) f(2)= 22-2×2+1

=22-4+1

=22-1

=21

Answer 2

Answer:

Step-by-step explanation:

f(2) = 22 - 2(2) + 1

      = 22 - 4 + 1

      = 22 - 3

      = 19

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

          = 22 - 2(1) +1

          = 22 - 2+1

          = 21

f(v5) = 22- 2(v5) +1

       = 22 -10v+1

       = 23-10v

f(2w+1) = 22 - 2(2w+1) +1

            = 22 - 4w -2 +1

            = 21 - 4w