What is the integral of (4x^3-8x^2+9)/(x^2-2x) ?

The integral of (4x^3-8x^2+9)/(x^2-2x) is 2x^2-9(1/2 ln|x|-1/2 ln|x-2|)+C

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integral of (4x^3-8x^2+9)/(x^2-2x)

\int \frac{4 x ^{3} - 8 x ^{2} + 9}{x ^{2} - 2 x} d x

2 x^{2} - 9 (\frac{1}{2} ln ∣ x ∣ - \frac{1}{2} ln ∣ x - 2 ∣) + C

Solution steps

\int \frac{4 x ^{3} - 8 x ^{2} + 9}{x ^{2} - 2 x} d x

Long division

\frac{4 x ^{3} - 8 x ^{2} + 9}{x ^{2} - 2 x} : 4 x + \frac{9}{x ^{2} - 2 x}

= \int 4 x + \frac{9}{x ^{2} - 2 x} 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 4 x d x + \int \frac{9}{x ^{2} - 2 x} d x

\int 4 x d x = 2 x^{2}

\int \frac{9}{x ^{2} - 2 x} d x = - 9 (\frac{1}{2} ln ∣ x ∣ - \frac{1}{2} ln ∣ x - 2 ∣)

= 2 x^{2} - 9 (\frac{1}{2} ln ∣ x ∣ - \frac{1}{2} ln ∣ x - 2 ∣)

Add a constant to the solution

= 2 x^{2} - 9 (\frac{1}{2} ln ∣ x ∣ - \frac{1}{2} ln ∣ x - 2 ∣) + C

\int \frac{c}{1 + x ^{2}} d x

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

\int sec (\frac{t}{3}) d t

\int 90 e^{- 0.12 x} d x

\int \frac{( 2 x + 3 )}{4 x ^{2} + 4 x + 5} d x

What is the integral of (4x^3-8x^2+9)/(x^2-2x) ?
The integral of (4x^3-8x^2+9)/(x^2-2x) is 2x^2-9(1/2 ln|x|-1/2 ln|x-2|)+C