Math, asked by sajushaijal, 11 months ago

Expand each of the following using suitable identities
1. ( 3a - 7b - c ) raise to power 2
Using identities ( a + b+c ) ka suqare
a 2 +b2+c2 + 2ab +2bc +2ca

Answers

Answered by bhattiruby10

1

Answer:

9a2+49b2+c2-42ab+14bc-6ac

this is expanded form

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