Question

Factorise 27x^3-135x^2+225x-125 by using a suitable identity.

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Answer 1

Answer:

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Answer 2

Step-by-step explanation:

(3x)³-(5)³-3(3x)²(5)+3(3x)(5)²

Using identity,

(a-b)³= a³-b³-3a²b+3ab²

here, a=3x and b= 5

(3x-5)³=(3x-5) (3x-5) (3x-5)