Math, asked by neelishreeja29, 4 months ago

can any one answer this question

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Answered by avni9050

1

Answer:

9

Step-by-step explanation:

(a + b + c)² = a² + b² + c² + 2( ab + bc + ca )

9² = a² + b² + c² + (2 × 36)

81 = a² + b² + c² + 72

81 - 72 = a² + b² + c²

9 = a² + b² + c²

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