Question

How to solve : (s+t)^3
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Answer 1

Explanation:

Hey there!

Here, given;

`( {s + t)}^(3)`

Use formula:

`( {a + b)}^(3) = {a}^(3) + 3 {a}^(2)b + 3a {b}^(2) + {b}^(3)`

Keep this formula in the question.

`( {s + t)}^( 3) = {s}^(3) + 3 {s}^(2) t + 3s {t}^(2) + {t}^(3)`

Hope it helps...

Answer 2

`s^3+3s^2t+3st^2+t^3`

Explanation:

`(s+t)^3\\\\\mathrm{Apply\:Perfect\:Cube\:Formula}:\\\quad \left(a+b\right)^3=a^3+3a^2b+3ab^2+b^3\\\\a=s,\:\:b=t\\=s^3+3s^2t+3st^2+t^3`