Factorize the Following Expressions 1- 27a3

Factorize the following expressions

1- 27a³

= (1)³ - (3a)³

= (1- 3a)(1² +1´ 3a + (3a)² ) [∵ a³ - b³ = (a - b)(a² + ab + b² )]

= (1- 3a)(1+ 3a + 9a²)

∴ 1- 27a³ = (1- 3a)(1+ 3a + 9a²)

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Chapter 5: Factorisation of Algebraic Expressions - Exercise 5.2 [Page 14]

Chapter 5 Factorisation of Algebraic Expressions
Exercise 5.2 | Q 3 | Page 14

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