solve itt!! I need it...
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x^3 - x^2 + ax + x - a - 1
= x^3 - x^2 + ax - a + x - 1
= x^2 ( x-1) +a(x - 1) +1(x-1)
= (x-1) (x^2 +a +1)
= x^3 - x^2 + ax - a + x - 1
= x^2 ( x-1) +a(x - 1) +1(x-1)
= (x-1) (x^2 +a +1)
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this is your answer may be
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