Answers

2014-06-23T20:28:05+08:00
F(x) = x + 5 
g(x) = x-3

(f+g)(x) = f(x)+g(x) 
(f+g)(x) = (x+5) + ( x-3) 
(f+g)(x) = x+5 + x-3
(f+g)(x) = 2x + 2

(f-g)(x) = f(x)-g(x) 
(f-g)(x) = (x+5) - (x-3) 
(f-g)(x) = x+5-x+3
(f-g)(x) = 8

(f•g)(x) = f(x) • g(x) 
(f•g)(x) = (x+5) (x-3) 
(f•g)(x) = x^2 - 3x + 5x -15
(f•g)(x) =  x^2 +2x -15

(f/g)(x) = f(x)/g(x) 
(f•g)(x) = (x+5) / (x-3) 

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