Presentation is loading. Please wait.
Published bySteven Gallagher Modified over 8 years ago
There is an agreement in mathematics that we don’t leave a radical in the denominator of a fraction.
So how do rationalize a denominator with a binomial containing radicals? (Without changing the value of the fraction, of course.)
Let’s see what happens if we multiply by That didn’t work!
When there is a binomial with a radical in the denominator of a fraction, you find the conjugate and multiply. This gives a rational denominator.
Simplify: Multiply by the conjugate. FOIL numerator and denominator. = = Simplify numerator and denominator.
Simplify · = =
Try this on your own:
This powerpoint was kindly donated to www.worldofteaching.com www.worldofteaching.com http://www.worldofteaching.comhttp://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.
© 2023 SlidePlayer.com Inc.
All rights reserved.