Solve the Problem $$( 3 x + 7 y ) ( 3 x - 3 y + 1 )$$

question 79

Multiple Choice

Solve the problem.
- $$( 3 x + 7 y ) ( 3 x - 3 y + 1 )$$

• A) \(9 x ^ { 2 } + 21 x y + 3 x - 21 y ^ { 2 } + 7 y\)
• B) \(9 x ^ { 2 } + 12 x y + 12 y ^ { 2 }\)
• C) \(9 x ^ { 2 } - 9 x y + 3 x - 21 y ^ { 2 }\)
• D) \(9 x ^ { 2 } + 12 x y + 3 x - 21 y ^ { 2 } + 7 y\)

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