Question

(x + y) ( x^ 2- xy + y^2)​

Answer 1

solution :

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Given :

To simplify (x + y)(x² - xy + y²)

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⇒ (x + y)(x² - xy + y²)

⇒ x(x² - xy + y²) + y(x² - xy + y²)

⇒ x³ -x²y + xy² +x²y -xy² + y³

⇒ x³ + y³ - x²y + x²y - xy² + xy²

⇒ x³ + y³    (This is actually an identity, you can use while solving problems).

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