Sunday, July 14, 2013

11:08 AM
Simplifying square roots is often required when you encounter a complicated number underneath the symbol " ". However don’t let that scare you! When you are armed with some important properties of square roots, simplifying them is a breeze:
Consider the following example:



Example:
What is the value of ?
A) 
B) 
C) 
D) 
E) 
Solution:

Step 1: Problems of this type rarely expect you to detemine a root of a larger number such as . In almost all cases, the expression can be simplified. In this case expressing the number inside the bracket as a multiple of  can simplify the expression:

A is the Correct Answer.

However be careful! You cannot apply these properties when addition or subtraction is involved. For example the following expression is correct:
 

However the following is clearly incorrect:
Remember:

Do you Like this:

0 comments :

Post a Comment

GRE Math Challenge