A) \[9{{x}^{2}}+4{{y}^{2}}+12xy\]
B) \[9{{x}^{2}}-4{{y}^{2}}+12xy\]
C) \[9{{x}^{2}}+4{{y}^{2}}-12xy\]
D) \[9{{x}^{2}}-4{{y}^{2}}-12xy\]
Correct Answer: C
Solution :
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