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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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