Which of the following is the correct factorization of \[9{{x}^{4}}-40

1.	Which of the following is the correct factorization of \[9{{x}^{4}}-40{{x}^{2}}+16?\]
A.	\[(2x+1)(x-2)(x+3)(x-7)\]
B.	\[(3x+2)(3x-2)(x+2)(x-2)\]
C.	\[(x-4)(x+2)(x-3)(x+1)\]
D.	\[(2x-1)(2x+1)(x+1)\left( x-1 \right)\]
Answer» C. \[(x-4)(x+2)(x-3)(x+1)\]

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Which of the following is the correct factorization of \[9{{x}^{4}}-40{{x}^{2}}+16?\]

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