Question

factorise the following by using suitable identities . 81x³-225x⁵ pls answer this question​

Answer 1

Answer:

81x³-225x5

9x³(9-25x²)

9x³[(3)²-(5x)²]

9x³(3+5x)(3-5x)

Answer 2

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Question : 81x³ - 224x⁵

❊ Identity used : a²-b² = (a+b) (a-b)

➼ x³[9² - (15x)²]

➼ x³[9² - (15x)²] = (9+15x) (9-15x)

➼ x³(9+15x) (9-15x)

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