question_answer

What is the measure of the third side of a triangle given that its two sides are \[{{a}^{2}}-2a+1\]and \[3{{a}^{2}}-5a+3\] and has a perimeter\[6{{a}^{2}}-4a+9\]?

A)  \[2{{a}^{2}}-3a-5\]

B)  \[2{{a}^{2}}+3a-5\]

C)  \[2{{a}^{2}}+3a+5\]

D)  \[2{{a}^{2}}-3a+5\]