Math Doubts

Cube of Sum of Two terms formula

Formula

$(1) \,\,\,$ ${(a+b)}^3$ $\,=\,$ $a^3+b^3+3ab(a+b)$

$(2) \,\,\,$ ${(x+y)}^3$ $\,=\,$ $x^3+y^3+3xy(x+y)$

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

${(x+y)}^3$ $\,=\,$ $x^3+y^3+3xy(x+y)$