Question

Factorise :-
512x3-27​

Answer 1

first of all you multiply 512*3 = 1536

then subtract 27 then you will get 1509

Answer 2

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Factorise :-

Factorise :-512x³-27

Solution :--

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512x³-27

= (8x)³-(3)³

we know that

a³-b³=(a-b)(a²+ab+b²)

so

=(8x-3)[(8x)²+8x × 3 +(3)²]

=(8x-3)[64x²+24x+9]

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