Question

Alpha + beta the whole cube formula

Answer 1

$\huge \color{black}{answer}$

a³ + b³ = (a + b)(a² – ab + b²)

$\huge{explanation}$

> (a + b)³ = a³ + ab(a + b) + b³

so

= a³ + b³ = (a + b)³ – ab(a + b)

= (a + b)[(a + b)² – ab]

= (a + b)[(a² + 2ab + b² – ab]

= (a + b)(a² + ab + b²)