Question

Factorise:
1) x cube - 3x square - 9x - 5​

Answer 1

${x}^{3} - {3x}^{2} - 9x - 5 \\ \\ ({x}^{2})(x - 3) - ( - 9 + \frac{32}{x - 3} )(x - 3) \\ \\ (x - 3)( {x}^{2} - ( - 9 + \frac{32}{x - 3}) \\ \\ (x - 3)( {x}^{2} + 9 - \frac{32}{x - 3} )$