Simplifying Rational Expressions: Including Opposites
By: Dara Cooper and Michelle Garay
Rational Expression: a fraction with polynomials in the numerator and denominator
#1 Rule: NO ZERO IN THE DENOMINATOR
• Factor out GCFs first and then factor if it is not simplified enough. If it is a trinomial: FACTOR IT!
• Opposites cancel out to equal a negative. For example: (x-5) and (5-x) cancel each other out to equal a negative
By: Dara Cooper and Michelle Garay
Rational Expression: a fraction with polynomials in the numerator and denominator
#1 Rule: NO ZERO IN THE DENOMINATOR
• Factor out GCFs first and then factor if it is not simplified enough. If it is a trinomial: FACTOR IT!
• Opposites cancel out to equal a negative. For example: (x-5) and (5-x) cancel each other out to equal a negative
Check out this video for information on simplifying rational expressions with opposites:
http://www.pascack.k12.nj.us/70420113010379593/lib/70420113010379593/Dara_Cooper_Michelle_garay.mov
Check out this website for extra help:
http://www.purplemath.com/modules/rtnldefs2.htm