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Factorize the Following Expressions 8x3 Y3 + 27a3 - Mathematics

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Question

Factorize the following expressions

8x3 y3 + 27a3

Solution

= (2xy)3 + (3a)3

= (2xy + 3a)((2xy)2  - 2xy x 3a + (3a)2)     [∵ a3 + b3  = (a + b)(a2 - ab + b2)]

= (2xy + 3a)(4x2y2  - 6xya + 9a2)

∴ 8x3 y3  + 27a3   = (2xy + 3a)(4x2y2   - 6xya + 9a2)

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

APPEARS IN

RD Sharma Mathematics [English] Class 9
Chapter 5 Factorisation of Algebraic Expressions
Exercise 5.2 | Q 4 | Page 14
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