need help on this. its for college algebra im stuck please help

Question

 If f(x) = x2 -1 and g(x) = 2x + 5, what is (f+g)(x(=)

 

 

 

Answer 1

Hello, thank you for taking the time to post your question!

(f + g)(x) = f(x) + g(x)

=x^2 – 1 + 2x + 5

=x^2 + 2x + 4

I hope that helps you get moving in a better direction on this type of question! Feel free to reach out if you have any additional questions beyond that :)

Answer 2

f(x) = x² - 1

g(x) = 2x + 5

 

(f + g)(x) = f(x) + g(x) = (x² - 1) + (2x + 5) = x² + 2x + 4