x +1 Evaluate the integral | dr. x2+2x +3 1 1 (a) 4Vr2 + 2x + 3 + C 2Vx2 + 2x + 3 + C Vx2 + 2x + 3 (b) Va2 + 2x + 3 (d) + C +C 4 2

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