Argue In Your Head m³-m Is Divisible By 6 For Any Integer m

Photo by Jonathan Cosens Photography on Unsplash

Notice the following are all multiples of 6:

  • 2³-2=6=6 times 1
  • 3³-3=24=6 times 4
  • 4³-4=60=6 times 10
  • 5³-5=120=6 times 20
  • 6³-6=210=6 times 35
  • 7³-7=336=6 times 56

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