dx x² + 9 1 х3 + 9х — 27 tan-1 1 x3 + C + 9x + 27 tạn + c\ Option 1 Option 2 — х3 — 9х + 27 tan 1 + C 1 х3 — 9х — 27 tan G) + c 3 | Option 3 Option 4 Option 5: none of these

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