What is the difference between `(a+b)^3 and a^3 + b^3`    Explain the difference between (a+b)^3 AND a^3+b^3

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You need to expand the cube of a+b such that:

`(a+b)^3 = a^3 + b^3 + 3ab(a+b)`

You should evaluate the requested difference between `(a+b)^3 ` and `a^3 + b^3` , hence, you need to subtract `a^3 + b^3`  such that:

`(a+b)^3 - a^3- b^3 = a^3 +...

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