Question

Expand by using suitable identity : ( 4a – 5b –c)2

Answer 1

Answer:

Using identity, (a+b+c)^2 = a^2 + b^2 + c^2 + 2ab + 2bc + 2ca

We get the expanded value as:-

16a^2 - 40ab - 8ac + 25b^2 + 10 bc + c^2

Hope it helps you ;)

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Answer 2

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