Monday, November 19, 2012

Math Notes- November 19,2012

To determine perfect squares and surds. 

I noticed that the surds have an odd number of decimals. (Notice the red line on the picture above). If it is a perfect square, it would have an even amount of decimals. 
for example:
 √0.0081 = 0.09² 

There is an even amount of decimals (in this case, there are 

four) which tells me that it's square root is not a surd.


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