Is cubing numbers ending in 5 under 5 seconds already invented/discovered in mathematics?

Science & Mathematics by Anonymous 2018-07-04 20:03:36

Social Science

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Is cubing numbers ending in 5 under 5 seconds already invented/discovered in mathematics? I know that squaring numbers ending in 5 is already invented/discovered, same thing with squaring numbers ending in 1, 4, 6, etc.