How to solve Undefined Rational Expressions? How do you know if an expression is undefined?
Channel: KNOW your MATH makes you MONEY by Majid Zarinfar
Date: 24/11/2019

How do you know if an expression is undefined? A rational expression is undefined when the denominator is equal to zero Lesson #26: Majid Zarinfar, BioMetric ME, Portable Lift Chair Inventor.

MY passion is helping people to improve their quality life style; is the reason that I have spent five years of my life and $600,000.00 personal financial resources to research, scientifically engineer and introduced to market, the only 40-1000 lbs Zero Energy Required Portable Lift Chair. Please visit: www.liftchairportable.com 

Now, my new project is the Simple MATH makes you MONEY YouTube Channel that is bout enhancing individual’s mathematical skill that would help him/her to obtain his/her desire occupation, or get a better job. It is also engineered and customized to elementary to high school academia studies. 
  Majid  Zarinfar, NYS STEM Certifed, MS ED, BioMetric ME, Inventor