Question

what is the formula of
a+b whole cube

Answer 1

Hello! dear,

Your answer goes like this ...

[a+b]3 =a3-3ab{a-b}-b3.

Thank you dear.

Hope it helps you dear.

Answer 2

( a + b )^3

= ( a + b ) ( a + b ) ( a + b )

= ( a^2 + 2ab + b^2 ) ( a + b )

= a^3 + 3a^2b + 3ab^2 + b^3

so

( a + b )^3 = a^3 + 3a^2b + 3ab^2 + b^3