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Seeking indefinite integral ∫ 2x-2 / x ^ 2-2x + 3DX Seek the concrete process
∫2x-2/x^2-2x+3dx
=∫(x^2-2x+3)'/(x^2-2x+3) dx
=∫1/(x^2-2x+3) d(x^2-2x+3)
=ln(x^2-2x+3)+c
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