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CBSE Class 9 Answered

Simplify: .
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
answered-by-expert Expert Answer

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

= a2 + b2 + c2 + 2b + 2 c + 2a

+ a2 + b2 + c2 - 2b - 2c + 2ca

+ a2 + b2 + c2 + 2ab - 2bc - 2c

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

Answered by | 04 Jun, 2014, 03:23: PM
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