What will you do to simplify x^2/x-1 - x^2/x+1 - 1/x-1 +1/x+1 , what will be the first step? Finding LCD or is there anything else that could be done? Thanks million for any input.

asked Sep 13, 2017 in Algebra 1 Answers by anonymous

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

The first thing to do is to collect together terms with the same denominator:

x^2/(x-1)-1/(x-1) - x^2/(x+1)+1/(x+1).

Next, combine the numerators: (x^2-1)/(x-1) - (x^2-1)/(x+1).

The denominator divides into the numerator because x^2-1=(x-1)(x+1);

x+1-(x-1)=x+1-x+1=2, so the expression simplifies to just 2.

answered Sep 14, 2017 by Rod Top Rated User (552,660 points)
@Rod Thank you so much, this is a great answer :) xx

Related questions

1 answer
0 answers
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
81,209 questions
85,308 answers
68,740 users