Expand each of the following using suitable identities:
a) (a + 3b + c)²
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Answer:
I don't know sorry
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please explain me
Answered by
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Answer:
(a + 3b + c)²
=a^2+ (3b)^2+c^2+ 2*3b*a +2*3b*c + 2*a*c
=a^2+ 9b^2+c^2 + 6ab+6bc+2ac
Step-by-step explanation:
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