Answer :
To complete the square we must have the form:
[tex]x^2+2bx+b^2[/tex]In this case b= -13, then we have to add
[tex](-13)^2=169[/tex]to complete the square.
To complete the square we must have the form:
[tex]x^2+2bx+b^2[/tex]In this case b= -13, then we have to add
[tex](-13)^2=169[/tex]to complete the square.