Question

factorise 64 - 1/(27x ^ 3) - 16/x + 4/(3x ^ 2)​

Answer 1

Step-by-step explanation:

1)Rewrite it in the form

a³−3a²b+3ab²−b³

,where a=4 and b= 1/3x.

4³−3×4²(1/3x)+3(4)(1/3x)²-(1/3x)³

2)Use Cube of Difference:

(a-b)³=a³−3a²b+3ab²−b³.

(4-1/3x)³

Done

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