Question

Factorise : (9x² - 1) - (1 + 3x )?

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Answer 1

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(9x²–1) – (1 + 3x)²

= (3x –1)(3x + 1) – (1 + 3x)²

= (3x + 1){(3x –1) – (1 + 3x)}

= (3x + 1)(3x –1 – 1 – 3x)

= (3x + 1)(–2)

=(3x-1)

Hope it's helps you :)

Answer 2

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