Mathematics, 13.01.2020 01:31, ilianysacosta10

Erin and christa were working on cubing binomials for math homework. erin believed they could save time with a shortcut. she wrote down the rule below for christa to follow. (a + b) -a + b3 does erin's shortcut always work? justify your result algebraically.

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Erin and christa were working on cubing binomials for math homework. erin believed they could save t...