Questions on Algebra: Functions, Domain, NOT graphing answered by real tutors!

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Question 167699: Perform the indicated operation. Let f(x)=x+1 and g(x)=x-1. Find f(g(x)).: Perform the indicated operation. Let f(x)=x+1 and g(x)=x-1. Find f(g(x)).
Answer by jim_thompson5910(9869) About Me  (Show Source):
You can put this solution on YOUR website!
f(x)=x+1 Start with the first function


f(g(x))=(x-1)+1 Plug in g(x)=x-1


f(g(x))=x-1+1 Remove the parenthesis


f(g(x))=x Combine like terms.