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Simplify
- (5m2+9mn6n2)(9m2+4mn9n2)\left( 5 m ^ { 2 } + 9 m n - 6 n ^ { 2 } \right) - \left( 9 m ^ { 2 } + 4 m n - 9 n ^ { 2 } \right)

Question 95

Multiple Choice

Simplify.
- (5m2+9mn6n2) (9m2+4mn9n2) \left( 5 m ^ { 2 } + 9 m n - 6 n ^ { 2 } \right) - \left( 9 m ^ { 2 } + 4 m n - 9 n ^ { 2 } \right)


A) 4m2+5mn15n2- 4 m ^ { 2 } + 5 m n - 15 n ^ { 2 }
B) 4m2+13mn+3n2- 4 m ^ { 2 } + 13 m n + 3 n ^ { 2 }
C) 4m2+5mn+3n2- 4 m ^ { 2 } + 5 m n + 3 n ^ { 2 }
D) 14m2+13mn15n214 m ^ { 2 } + 13 m n - 15 n ^ { 2 }

Correct Answer:

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