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Factorise: 𝑥3 −𝑦31331 - Mathematics

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Question

Factorise:

`x^3 - y^3/1331`

Sum
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Solution

Given expression: `x^3 - y^3/1331`

⇒ `x^3 - y^3/11`

We know that,

a3 + b3 = (a + b) (a2 – ab + b2)

Hence,

⇒ `(x - y/11) (x^2 + (xy)/11 + 121y^2)`

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Chapter 4: Factorisation - EXERCISE 4D [Page 46]

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B Nirmala Shastry Mathematics [English] Class 9 ICSE
Chapter 4 Factorisation
EXERCISE 4D | Q I. 8. | Page 46
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