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Square root

On a Casio calculator you can take the square root with the key

 


Example 1

To calculate √64 = 8

    6   4  =  √64
           8.

 


Example 2

To calculate √0 = 0

    0  =  √0
           0.

 


Example 3

To calculate √2 = 1.4142…

 2  =  √2
 1.414213562

 


Example 4

To calculate √2 × √2 = 2

 2  ×  2  =  √2×√2
           2.

 


Example 5

To calculate √2√2 = 1.6325…

 2   2  =  √2∧√2
 1.632526919

 


Example 6

To calculate (√2√2)√2 = 2

 2   2  =  2  =  Ans∧√2
           2.

 


Example 7

To calculate 2√2 = 2.6651…

 2   2  =  2∧√2
 2.665144143

 


Example 8

To enter √−2

(−)  2  = Math ERROR 
 

The square root from a negative number always gives a message.

 


Example 9

To calculate √(−1)2 = 1

( (−)  1  ) x2 =  √(-1)2
           1.

 


Example 10

To calculate 2√½ = √(2 ×2 × ½) = √2 = 1.4142...

 2   1  a b/c  2  = 2√12            
1.414213562   

 


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