Question

$x^{3} -3x^{2} -9x-5$

Answer 1

${x}^{3} - {3x}^{2} - 9x - 5 \\ \\ {x}^{ 3} - {x}^{2} - {4x}^{2} - 4x - 5x - 5 \\ \\ {x}^{2} (x + 1) - 4x(x + 1) - 5(x + 1)} \\ \\ (x + 1)( {x}^{2} - 4x - 5) \\ \\ (x + 1)( {x}^{2} + x - 5x - 5) \\ \\ (x +1 )(x(x + 1) - 5(x + 1)) \\ \\ (x + 1)(x + 1)(x - 5)$

Answer 2

X^3-3x^2-9x-5
See the photo attached for solution