x2-64 = (x-8)(x+8) when factored
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(x-8)(x+8) = x2-64
x2-12x+35 = (x-5)(x-7)
x-4 is the correct answer for Apex
x2 - 64 can be written as x2 - 82, which is of the form of a2 - b2.And a2 - b2 is factored as (a-b)(a+b).Therefore, x2 - 64 is factored as (x+8)(x-8).
No because the discriminant is less than zero.