Factor a^2-26a+169

Math
a2-26a+169
Rewrite 169 as 132.
a2-26a+132
Check that the middle term is two times the product of the numbers being squared in the first term and third term.
26a=2⋅a⋅13
Rewrite the polynomial.
a2-2⋅a⋅13+132
Factor using the perfect square trinomial rule a2-2ab+b2=(a-b)2, where a=a and b=13.
(a-13)2
Factor a^2-26a+169

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