Question

F(x)=x^2+1 and g(x) =5-x what is (f-g)(x)

Answer 1

Hello from MrBillDoesMath!

Answer:

x^2 + x - 4

Discussion:

(f-g)(x) = f(x) - g(x) by definition. In our case this becomes

(f-g)(x) = f(x) - g(x)

= (x^2 +1) - (5 - x)

= x^2 +x + (1-5)

= x^2 + x - 4

Thank you,

MrB