Question

What is the formula of
(a-1)³

Answer 1

Step-by-step explanation:

(a-1)³

a³-3•a²•1 +3•a•1-1³

a³-3a²+3a -1

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Answer 2

Answer:

Question :-

➠ (a - 1)³

Formula used :-

➪ (a - b)³

➭ a³ - b³ - 3ab(a - b)

Answer :-

➠ (a - 1)³

➻ (a)³ - (1)³ - 3 × a × 1(a - 1)

➻ a³ - 1 - 3a(a - 1)

➻ a³ - 1 - 3a² + 3a

➻ a³ - 3a² + 3a - 1

∴ The value of (a - 1)³ is a³ - 3a² + 3a - 1