Question

what is formula of a plus b whole cube

Answer 1

Hoping that it would help!

Answer 2

The question is what is the formula of a plus b whole cube

The solution to this question is we have to find the formula for the given variables.

the expression can be written based on the question

${(a + b)}^{3}$

The given expression is cubic.

The cubic formula of addition can be written as

${(a +b )}^{3} = {a}^{3} + {b}^{3} + 3ab( a+b )$

let us expand the above expression, we get the answer as

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

Therefore, the final answer to the given question is obtained

we can also use the same method to find the formula for minus

${(a - b)}^{3}$

we can also expand the above expression like addition.

plus resembles addition and minus resembles subtraction.

${(a - b)}^{3} = {a}^{3} + 3 {a}^{2}( - b) + 3 ({ - b}^{2}) a + { -b }^{3}$

It is simple as the addition formula, just substitute -b in places of b, and we get

${(a - b)}^{3} = {a}^{3} - 3 {a}^{2}( b) + 3 ({ b}^{2}) a { -b }^{3}$

This, the formula for a-b and a+b was obtained

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