SOLUTION: if f(x)=x and g(x)=x-5,find a. (f+g)(x) b. (f-g)(x) c. (f x g)(x) d. (f/g)(x)

Algebra ->  Expressions -> SOLUTION: if f(x)=x and g(x)=x-5,find a. (f+g)(x) b. (f-g)(x) c. (f x g)(x) d. (f/g)(x)      Log On


   

Question 965430: if f(x)=x and g(x)=x-5,find
a. (f+g)(x)
b. (f-g)(x)
c. (f x g)(x)
d. (f/g)(x)
Found 2 solutions by t0hierry, amarjeeth123:
Answer by t0hierry(194) About Me  (Show Source):
You can put this solution on YOUR website!
a x + x - 5
b x - x + 5
c x(x-5)
d x/(x-5)

Answer by amarjeeth123(569) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)=x and g(x)=x-5
(f+g)(x)=f(x)+g(x)=x+x-5=2x-5
(f-g)(x)=f(x)-g(x)=x-(x-5)=5
(f*g)(x)=f(x)*g(x)=x(x-5)=x^2-5x
(f/g)(x)=f(x)/g(x)=x/(x-5)