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Multiply Assume That Variables Used as Exponents Represent Positive Integers 9x2yn(3xyn+1+2)9 x ^ { 2 } y ^ { n } \left( - 3 x y ^ { n } + 1 + 2 \right)

Question 70

Multiple Choice

Multiply. Assume that variables used as exponents represent positive integers.
- 9x2yn(3xyn+1+2) 9 x ^ { 2 } y ^ { n } \left( - 3 x y ^ { n } + 1 + 2 \right)


A) 27x3yn2+1+18x2yn- 27 x ^ { 3 } y ^ { n ^ { 2 } + 1 } + 18 x ^ { 2 } y ^ { n }
B) 27x3y2n+18x2yn- 27 x ^ { 3 } y ^ { 2 n } + 18 x ^ { 2 } y ^ { n }
C) 27x2y2n+1+18x2yn- 27 x ^ { 2 } y ^ { 2 n } + 1 + 18 x ^ { 2 } y ^ { n }
D) 27x3y2n+1+18x2yn- 27 \mathrm { x } ^ { 3 } \mathrm { y } ^ { 2 \mathrm { n } + 1 } + 18 \mathrm { x } ^ { 2 } \mathrm { y } \mathrm { n }

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