Mathematics
Grade10
Easy
Question
Find the value of f(g(3)) if f(x) = x2 - 9 , g(x) = 2x - 10
- 25
- 0
- -4
- 7
The correct answer is: 7
To find the value of f(g(3)) if f(x) = x2 - 9 , g(x) = 2x - 10.
Given f(x) = x2 - 9 , g(x) = 2x - 10
g(3) = 2 × 3 - 10 = -4
f(g(3)) = f(-4) = (-4)2 - 9 = 16 - 9 = 7
Hence, the value of f(g(3)) if f(x) = x2 - 9 , g(x) = 2x - 10 is 7.
