What is the integral of (x^2)/(x^2+3x+2) ?

The integral of (x^2)/(x^2+3x+2) is ln|x+1|-4ln|x+2|+x+C

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integral of (x^2)/(x^2+3x+2)

\int \frac{x ^{2}}{x ^{2} + 3 x + 2} d x

ln ∣ x + 1 ∣ - 4 ln ∣ x + 2 ∣ + x + C

Solution steps

\int \frac{x ^{2}}{x ^{2} + 3 x + 2} d x

\frac{x ^{2}}{x ^{2} + 3 x + 2} = \frac{- 3 x - 2}{x ^{2} + 3 x + 2} + 1

= \int \frac{- 3 x - 2}{x ^{2} + 3 x + 2} + 1 d x

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= \int \frac{- 3 x - 2}{x ^{2} + 3 x + 2} d x + \int 1 d x

\int \frac{- 3 x - 2}{x ^{2} + 3 x + 2} d x = ln ∣ x + 1 ∣ - 4 ln ∣ x + 2 ∣

\int 1 d x = x

= ln ∣ x + 1 ∣ - 4 ln ∣ x + 2 ∣ + x

Add a constant to the solution

= ln ∣ x + 1 ∣ - 4 ln ∣ x + 2 ∣ + x + C

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What is the integral of (x^2)/(x^2+3x+2) ?
The integral of (x^2)/(x^2+3x+2) is ln|x+1|-4ln|x+2|+x+C