Simplify. \[ \frac{x^{3}-6 x^{2}+9 x}{x^{3}-3 x^{2}} \] \( \frac{x^{3}-6 x^{2}+9 x}{x^{3}-3 x^{2}}=\square \)
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To simplify the expression \(\frac{x^{3}-6 x^{2}+9 x}{x^{3}-3 x^{2}}\), we start by factoring both the numerator and the denominator. First, we factor the numerator: \[ x^{3}-6 x^{2}+9 x = x(x^2 - 6x + 9) = x(x - 3)^2. \] Next, we factor the denominator: \[ x^{3}-3 x^{2} = x^{2}(x - 3). \] Now we can substitute the factored forms back into the expression: \[ \frac{x(x - 3)^2}{x^{2}(x - 3)}. \] Next, we can cancel out the common terms in the numerator and the denominator: - \(x - 3\) appears in both the numerator and denominator. - We can also cancel \(x\) from the numerator with \(x^2\) in the denominator. This results in: \[ \frac{(x - 3)}{x}, \] for \(x \neq 0\) and \(x \neq 3\). So the simplified expression is: \[ \frac{x^{3}-6 x^{2}+9 x}{x^{3}-3 x^{2}} = \frac{x - 3}{x}. \]