Tuesday
July 7, 2015

Homework Help: Algebra

Posted by Maya on Sunday, April 10, 2011 at 4:47pm.

Perform the indicated operation and state the domain. Let f(x)=x-1 and g(x)=x+1

f(x) - g(x)

Heres my work
(x-1) - (x+1)
x-x=0 and -1-1=-2
Answer =-2 because the x's cancel each other out.
How do i find the domain when there is no x in the answer?

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