Question

Factorise: 125a³ - 64b³​

Answer 1

Answer:

please see above picture for answer

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Answer 2

Step-by-step explanation:

this is a^3 -b^3 formula we should use so

(a3 - b3)=(a + b) (a2 - ab + b2 ).

= (5^3a^3 - 4^3b^3)

= factorise by using formula (5a - 4b )^3 so now it look it as (a - b)^3

The formula is (a-b)³=a³-3a²b+3ab²-b³.

so I kept solution in paper attachment......