Question

x³-3x²-9x-5 factorie​

Answer 1

Answer:

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X³ - 3x² - 9x - 5

= x³ + x² - 4x² - 4x - 5x - 5

= x²(x + 1) - 4x (x + 1) - 5 (x + 1)

= (x + 1) (x² - 4x - 5)

= (x + 1)(x² - 5x + x - 5)

= (x + 1) [x(x - 5) + 1(x - 5)]

= (x + 1) [(x - 5)(x + 1)]

= (x + 1) (x + 1) (x - 5)

=(x + 1)² (x - 5)