Find the indefinite integral of ∫ DX / X (1 + X + X & # 178;) ^ & # 189

Give me an idea. It's too hard to calculate
1 + X + x ^ 2 = 3 / 4 + (x + 1 / 2) ^ 2, so that x + 1 / 2 = 3tany / 4, so that the root sign can be removed (using 1 + (tany) ^ 2 = 1 / (cosy) ^ 2)

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