Expand the Following:
(2a + 3b + 4c)2
Please tell me the answer quickly guys.
Answers
Answered by
2
By using a²+b²+c²+2ab+2ca+2bc
4a²+9b²+16c²+12ab+24bc+16ca
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Answered by
1
Answer:
(a + b + c)² = a² + b² + c² + 2ab + 2bc + 2ac
(2a + 3b + 4c)² = (2a)² + (3b)² + (4c)² + 2 x2a x3b + 2 x3b x4c + 2 x4c x2a
= 4a²+ 9b² + 16c² + 12ab + 24bc + 16ac
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