1.

What is the perfect square form of \[9{{a}^{2}}-\frac{12}{5}a+\frac{4}{25}\]?

A.  \[{{\left( a-\frac{2}{5} \right)}^{2}}\]     
B.  \[{{\left( 3a-\frac{2}{5} \right)}^{2}}\]   
C.  \[{{\left( 2a-\frac{2}{5} \right)}^{2}}\]   
D.         \[{{\left( 3a+\frac{2}{5} \right)}^{2}}\]                  
Answer» C.  \[{{\left( 2a-\frac{2}{5} \right)}^{2}}\]   


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