Question

Which Product will result in a cell or difference of cubes?
Pls do not give any joke answers

Answer 1

(x-9)(x²+9x+81); it'll give a difference of cubes

Explanation:

Generally, the difference of cubes formula is (a³-b³)=(a-b)(a²+ab+b²), and the third option is the only one which fits it; with "a"= x and "b"= 9.

*The sum of cubes formula is (a³+b³)=(a+b)(a²-ab+b²); for future reference.

Answer 2

Explanation:

Good morning,

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The right answer is : (x-9)(x²+9x+81) = x³ - 9³

In fact (a³−b³)=(a−b)(a² + ab + b²) and here we have a=x , b=9.

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:)