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STatiana [176]
3 years ago
6

Factor completely: 1331x^3 - 729y^3

Mathematics
1 answer:
Studentka2010 [4]3 years ago
5 0

Answer:

(11x - 9y) (121x² + 99xy + 81)

Step-by-step explanation:

Difference of cubes

∛1331x³ = 11x = a

∛729y³ = 9y = b

(a³ + b³) = (a + b) (a² - ab + b²)

(a³ - b³) = (a - b) (a² + ab + b)

(1331x³ - 729y³) = (11x - 9y) (121x² + 99xy + 81)

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