v^2-14v+

Hi !

v^2 - 14v + ?

As general formula is

a^2 -2(a)(b) + b^2

Now from above we can see that

v^2 - 2(v)(7) + 7^2

So

v^2 - 14v + 49

v^2 - 7v - 7v + 49

v(v - 7) - 7 (v - 7)

(v - 7)(v - 7)

(v - 7)^2

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