Question

Factorise: a^2+b^2+2(ab+BC+CA)

Answer 1

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a² + b² + 2ab + 2bc + 2ca

As we know, p² + q² + 2pq = (p + q)²

We get,

= ( a+b)² + 2bc + 2ca

= ( a+b)² + 2c( b + a )

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Answer 2

Answer:

(a+b+c)^2

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