(а+б)3

To expand the expression \((a + b)^3\), you can use the binomial theorem or simply apply the formula for the cube of a binomial. The formula is:

\[ (a + b)^3 = a^3 + 3a^2b + 3ab^2 + b^3 \]

So, \((a + b)^3\) expands to:

\[ a^3 + 3a^2b + 3ab^2 + b^3 \]