x-a is the factor of x²-2x +1
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Well, it depends on what you mean by “factor.” Usually when we talk about factoring, we mean factoring “over the integers,” which means to write the polynomial ...
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Step-by-step explanation:
Having seen this many, many, times before, now, I simply write (x-1)^2.
But, in the beginning, I could have written, x^2 - x - x + 1 . Then realize that this is, x•(x-1) - (x-1) = (x-1)•(x-1) = (x-1)^2 .
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