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Factorize: X3 + X - 3x2 - 3 - Mathematics

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Question

Factorize: x3 + x - 3x2 - 3

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Solution

x3 + x - 3x2 - 3

Taking x common in (x3  + x)

= x (x2 +1) - 3x2 - 3

Taking -3 common in (-3x2  - 3)

= x(x2 +1) - 3(x2 +1)

Now, we take (x2  +1) common

= (x2 +1)( x - 3)

`∴ x^3 + x - 3x^2 - 3 = (x^2 + 1)(x - 3)`

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Chapter 5: Factorisation of Algebraic Expressions - Exercise 5.1 [Page 9]

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RD Sharma Mathematics [English] Class 9
Chapter 5 Factorisation of Algebraic Expressions
Exercise 5.1 | Q 1 | Page 9
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