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Solve the Problem 7x7(3x5+7x49)7 x ^ { 7 } \left( 3 x ^ { 5 } + 7 x ^ { 4 } - 9 \right)

Question 106

Multiple Choice

Solve the problem.
- 7x7(3x5+7x49) 7 x ^ { 7 } \left( 3 x ^ { 5 } + 7 x ^ { 4 } - 9 \right)


A) 21x12+49x1163x721 x ^ { 12 } + 49 x ^ { 11 } - 63 x ^ { 7 }
B) 21x5+49x46321 x ^ { 5 } + 49 x ^ { 4 } - 63
C) 21x12+7x4921 x ^ { 12 } + 7 x ^ { 4 } - 9
D) 21x12+49x1121 x ^ { 12 } + 49 x^{ 11}

Correct Answer:

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