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• Using rational root test, we find possible rational roots are: ±1, ±2, ±4, ±8 Trying these, we find that r = 2 is a root (so (r−2) is a factor) Now we use synthetic division to find quadratic factor 2 . | . 1 .. −6 ... 12 .. −8 …

  in How do you factor: r^3 - 6r^2 + 12r - 8? Comment by qc May 2021
• Using rational root test, we find possible rational roots are: ±1, ±2, ±4, ±8 Trying these, we find that r = 2 is a root (so (r−2) is a factor) Now we use synthetic division to find quadratic factor 2 . | . 1 .. −6 ... 12 .. −8 …

  in How do you factor: r^3 - 6r^2 + 12r - 8? Comment by qc May 2021