Question

Factor x2 − 7x + 8. (x + 8)(x − 1) Prime (x − 8)(x − 1) (x + 8)(x + 1)

Answer 1

Factors of the given quadratic are irrational. You could say it is
  Prime

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roots are 3.5±√4.25 ≈ {1.438, 5.562}