Question

please answer this question​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

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