Asked by Cici
27-r to the 3rd power
Answers
Answered by
Reiny
did you mean (27-r)^3 ?
then you have
27^3 + 3(27)^2 (-r) + 3(27)(-r^2 + (-r)^3
= 19683 - 2187r + 81r^2 - r^3
then you have
27^3 + 3(27)^2 (-r) + 3(27)(-r^2 + (-r)^3
= 19683 - 2187r + 81r^2 - r^3
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