The real factors of \[{{x}^{4}}+9\]are

1.	The real factors of \[{{x}^{4}}+9\]are
A.	\[\left( {{x}^{2}}+3 \right)\left( {{x}^{2}}+3 \right)\]
B.	\[\left( {{x}^{2}}+3 \right)\left( {{x}^{2}}-3 \right)\]
C.	\[\left( {{x}^{2}}+2x+3 \right)\left( {{x}^{2}}-3x+3 \right)~\]
D.	Does not exist
Answer» E.

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The real factors of \[{{x}^{4}}+9\]are

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