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Multiply Assume That All Variables Represent Natural Numbers 7x2yn(9xyn+1+11)7 x ^ { 2 } y ^ { n } \left( - 9 x y ^ { n + 1 } + 11 \right)

Question 112

Multiple Choice

Multiply. Assume that all variables represent natural numbers.
- 7x2yn(9xyn+1+11) 7 x ^ { 2 } y ^ { n } \left( - 9 x y ^ { n + 1 } + 11 \right)


A) 63x2y2n+1+77x2yn- 63 x ^ { 2 } y ^ { 2 n + 1 } + 77 x ^ { 2 } y ^ { n }
B) 63x3y2n+1+77x2yn- 63 x ^ { 3 } y ^ { 2 n + 1 } + 77 x ^ { 2 } y ^ { n }
C) 63x3yn2+1+77x2yn- 63 x ^ { 3 } y ^ { n ^ { 2 } + 1 } + 77 x ^ { 2 } y ^ { n }
D) 63x3y2n+77x2yn- 63 x ^ { 3 } y ^ { 2 n } + 77 x ^ { 2 } y ^ { n }

Correct Answer:

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