Question

which is the right formula of (a + b ) 3 = a3 + b3 + 3ab ( a+ b) or '' '' = '' + '' + 3a2b + 3ab2 OR ARE THESE BOTH CORRECT?????????????

Answer 1

Both are same. (a+b)^3 = a^3+ b^3+ 3ab ( a+ b) and a^3+ b^3+ 3a^2b+ 3ab^2