Question

20. Factorise :-(a)+(b)' +(c) - 2 a
b+2bc - 2 ca.​

Answer 1

Answer:

Hi friend

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Your answer

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FACTORISATION

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a² + b² + 2ab + 2bc + 2ca

=> a² + b² + c² + 2ab + 2bc + 2ca - c² [Adding and subtracting c².]

=> (a² + b² + c² + 2ab + 2bc + 2ca) - c²

=> (a + b + c)² - c²

=> (a + b + c + c)(a + b + c - c). [Using identity => a² - b² = (a + b)(a - b)]

=> (a + b + 2c)(a + b)

HOPE IT HELPS