Question

Consider the functions f(x) = 2x + 1 and g(x) = x2 − 10. What is the value of (f − g)(5)?

−4

4

−11

26

Answer 1

just subtract the terms, then sub x=5

Answer 2

\[(f-g)(x)=f(x)-g(x)=(2x+1)-(x^2-10)\]
\[(f-g)(5)=f(5)-g(5)=(2\times5+1)-(5^2-10)\]

Answer 3

-4?

Answer 4

good show

Answer 5

thxs for the help