Answer:
49
Step-by-step explanation:
To complete the square we use the formula:
[tex]c=(\frac{b}{2} )^{2}[/tex]
So we can plug in 14 for b to find c.
[tex]c=(\frac{14}{2} )^{2}\\\\c=(7 )^{2}\\c=49[/tex]
Now this equation can be factored into:
[tex](x-7)^{2}[/tex]
