Question

factorise X ^3-225x​

Answer 1

Question:-

➡ Factorise x³ - 225x

Solution:-

x³ - 225x

= x(x² - 225)

= x(x² - 15²)

= x(x + 15)(x - 15)

Hence, the factorised form is x(x + 15)(x - 15)

Identity Used:-

➡ a² - b² = (a + b)(a - b)

Other Identities:-

➡ a² + 2ab + b² = (a + b)²

➡ a² - 2ab + b² = (a - b)²

➡ a³ + b³ = (a + b)(a² - ab + b²)

➡ a³ - b³ = (a - b)(a² + ab + b²)

Answer 2

Answer:

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