Question

the expansion form of (3a+2b-c)..​

Answer 1

Answer:

Step-by-step explanation:=(a+b+c)^2

=a^2+b^2 +c^2 +2ab+2bc+2ac

BY THIS FORMULA

=9a^2+4b^2+c^2-12ab+4bc-6ac is the correct answer...

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