Question

(a+2b+c)² expanded form
step by step
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Answer 1

Answer:

$a {}^{2} + 4b { }^{2} + c {}^{2} + 4ab + 4bc + 2ac$

Step-by-step explanation:

Hope this is correct

Answer 2

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Expand (a+2b+c)²

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Using identity

(a+b+c)² = a² + b² + c² + 2ab + 2bc + 2ca

We have,

(a)² + (b)² + (c)² + (2 × a × 2b) + (2 × 2b × c) + (2 × c × a)

a² + 4b² + c² + 4ab + 4bc + 2ca

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