Question

(a+b+c+ d) ^3 cube find ​

Answer 1

first let's revise few formulae;;

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

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

now (a+b+c+d)^3..

let's take a+b as one term and c+d as another term..now use first formula

kindly refer the attachment above for complete solution