Question

(9x-3)^3 please solve this equation ​

Answer 1

Step-by-step explanation:

(9x-3)³ = (9x-3)(9x-3)(9x-3)

= (81x²-9+54x)(9x-3)

= 9x(81x²-9+54x)-3(81x²-9+54x)

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Answer 2

Answer:

Rule:(a - b)³= a³ - b³- 3ab(a - b).

Applying formula ,

(9x-3)³= (9x)³-3³-3×9x×3(9x-3)

= 729x³-27-81x(9x-3)