Question

x³ - 9x -x² +9 factorise

this is 4 mark please give answer in detail ​

Answer 1

Answer:

(x-1)(x²-9)

Step-by-step explanation:

x(x²-9)-1(x²-9)

(x-1)(x²-9)

i hope it to be the correct answer

Answer 2

Answer:

(x + 3)(x - 3)(x - 1)

Step-by-step explanation:

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

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