Identify the expression equivalent to the expansion of \[{{(2a+b-c)}^{

1.	Identify the expression equivalent to the expansion of \[{{(2a+b-c)}^{2}}.\]
A.	\[2{{a}^{2}}+{{b}^{2}}+{{c}^{2}}-2ab-2bc-2ca\]
B.	\[4{{a}^{2}}+{{b}^{2}}+{{c}^{2}}-4ab+4bc+4ca\]
C.	\[4{{a}^{2}}-{{b}^{2}}+{{c}^{2}}-4ab-4bc-4ca\]
D.	\[4{{a}^{2}}+{{b}^{2}}+{{c}^{2}}+4ab-2bc-4ac\]
Answer» E.

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Identify the expression equivalent to the expansion of \[{{(2a+b-c)}^{2}}.\]

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