binomial cube formula problem 6:
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Calculate the following binomial cube formula:
(6x + y) • (36x² – 6xy + y²) = ?
answer:
(a + b) • (a² – ab + b²) = a³ + b³
(6x + y) • (36x² – 6xy + y²) = 216x³ + y³
how to calculate the parts:
(6x + y) • (36x² – 6xy + y²) =
216x³ + 36x²y – 36x²y – 6xy² + 6xy² + y³ =
216x³ + 36x²y – 36x²y – 6xy² + 6xy² + y³ =
216x³ + y³