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1. \(\int_{}^{} \frac{10x^3 + 40x^2 + 40x + 6}{x^4 + 6x^3 +11x^2 + 6x} \cdot dx\)

2. \(\int_{}^{} \frac{2x+1}{(x^2+1)^2} \cdot dx\)

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