Partial Fractions
1. Given the expression to decompose: $$x + \frac{3}{(x - 2)^2}$$
2. Since the denominator is $(x - 2)^2$, consider partial fractions of the form: $$\frac{A}{x - 2} + \frac{B}{(x - 2)^2}$$
3. Write the original fraction as: $$x + \frac{3}{(x - 2)^2} = \frac{A}{x - 2} + \frac{B}{(x - 2)^2}$$
4. Multiply both sides by $(x - 2)^2$ to clear the denominator:
$$ (x + \frac{3}{(x - 2)^2}) (x - 2)^2 = A(x - 2) + B $$
5. Simplify left side:
$$ x(x - 2)^2 + 3 = A(x - 2) + B $$
6. Expand $(x - 2)^2$:
$$ (x - 2)^2 = x^2 - 4x + 4 $$
7. So left side becomes:
$$ x(x^2 - 4x + 4) + 3 = x^3 - 4x^2 + 4x + 3 $$
8. Set the equality:
$$ x^3 - 4x^2 + 4x + 3 = A(x - 2) + B $$
This is not possible because left side is cubic and right side is linear in x, so the original expression is a polynomial plus a fraction, not a pure rational function suitable for partial fraction decomposition.
9. The partial fraction decomposition actually applies to proper rational functions. The expression $x + \frac{3}{(x - 2)^2}$ is already a sum of a polynomial $x$ and a proper rational fraction $\frac{3}{(x - 2)^2}$.
10. Therefore, the given expression cannot be decomposed further into simpler partial fractions because $x$ is not part of the fraction decomposition.
**Final answer:** The expression is already decomposed: $$x + \frac{3}{(x - 2)^2}$$