Find the Sum or Difference $$( 9 m - 11 w ) ( 9 m + 11 w )$$

question 173

Multiple Choice

Find the sum or difference.
- $$( 9 m - 11 w ) ( 9 m + 11 w )$$

• A) \(81 m ^ { 2 } + 198 m w - 121 w ^ { 2 }\)
• B) \(81 m ^ { 2 } - 198 m w - 121 w ^ { 2 }\)
• C) \(9 m ^ { 2 } - 11 w ^ { 2 }\)
• D) \(81 m ^ { 2 } - 121 w ^ { 2 }\)

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