Respuesta :

texaschic101
x^2 - 16x + 64 = 
(x - 8)(x - 8) =
(x - 8)^2

 ** see ur x term (-16x)....u take half of ur x term, which would be -8, then square it...(-8)^2 = 64...then add that to both sides. Then factor it.

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