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Factor Completely 9x4+21x39x221x9 x ^ { 4 } + 21 x ^ { 3 } - 9 x ^ { 2 } - 21 x

Question 122

Multiple Choice

Factor completely.
- 9x4+21x39x221x9 x ^ { 4 } + 21 x ^ { 3 } - 9 x ^ { 2 } - 21 x


A) 3x(3x+7) (x+1) (x1) - 3 x ( 3 x + 7 ) ( x + 1 ) ( x - 1 )
B) 3x(3x+7) (x+1) (x1) 3 x ( 3 x + 7 ) ( x + 1 ) ( x - 1 )
C) 3x(3x7) (x+1) (x1) 3 x ( 3 x - 7 ) ( x + 1 ) ( x - 1 )
D) 3x(3x+7) (x+1) 23 x ( 3 x + 7 ) ( x + 1 ) ^ { 2 }

Correct Answer:

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