Question

Given f(x) = √(x-3) , what is the positive value of f(12)?

Answer 1

3

Explanation:

Given

f(x) =
`√((x-3))` , then

f(12) =
`√(12-3)` =
`√(9)` = ± 3

There are 2 values 3 and - 3

The positive value of f(12) is + 3