michaellanoynay13 michaellanoynay13

15-10-2020
Mathematics

contestada

5. 27a3+216b3 ???
tomorrow is the submission :(

Respuesta :

devishri1977 devishri1977

15-10-2020

Answer:

(3a +6b) (9a² - 18ab + 36b²)

Step-by-step explanation:

27 = 3 * 3 * 3 = 3³

216 = 6 * 6 * 6 = 6³

a³ + b³ = (a + b)(a² - ab + b²)

27a³ + 216b³ = (3a)³ + (6b)³

= (3a + 6b)( (3a)² - 3a*6b + (6b)² )

= (3a +6b) (9a² - 18ab + 36b²)

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