Question

(a^3-b^3) expansion formula​

Answer 1

Step-by-step explanation:

Expansion of a³ - b³ :--)

(a - b)³ = a³ - 3ab(a - b) - b³

a³ - b³ = (a - b)³ + 3ab(a - b)

(a - b)[(a - b)² + 3ab]

(a - b)(a² - 2ab + b² + 3ab)

(a - b) (a² + ab + b²)

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a³ - b³ = (a - b) (a² + ab + b²)

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Answer 2

Answer:

${a}^{3} - {b}^{3} = (a - b)( {a}^{2} + ab + {b}^{2} ) \\ \\ {a}^{3} - b {}^{3} = (a - b) {}^{3} + 3ab(a - b)$

Hope this helps. ^_^