More Radical Numbers
Friday, December 16th, 2011 at
3:40 pm
Radical Numbers – Part II
Properties of Radicals
Simplifying Radicals
Definition of a radical in Simplest Form:

all possible factors have been removed from the radical

all rationals [fractions] have radicalfree demonimators

the index of the radical is reduced
Examples of Simplifying with Even Roots:
Simplifying with Odd Roots:
Like Radicals have the same index and the same radicand.
do not need because [odd index]
Rationalizing Denominators and Numerators
To rationalize a radical, you multipy by the conjugate. are conjugates. If you multiply a number by its conjugate the result does not have a radical.
Examples:
‘D’
‘D’
‘D’
‘N’
Filed under: Prerequisites for PreCalculus
Like this post? Subscribe to my RSS feed and get loads more!
Leave a Reply