Question

(a-b+c)2+(b-c+a)2+2(a-b+c)(b-c+a)

Answer 1

Answer :

Now,

(a - b + c)² + (b - c + a)² + 2 (a - b + c) (b - c + a)

= { (a - b + c) + (b - c + a) }²

= ( a - b + c + b - c + a )²

= ( 2a )²

= 4 a²

IDENTITY RULE :

(a + b)² = a² + b² + 2ab

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