Question

Si : a - b = 4 ; ab = 2 , halla : a³ - b³

Answer 1

Explicación paso a paso:

Si : a - b = 4 ; ab = 2 , halla : a³ - b³

(a - b)³= (4)³

a³-b³-3ab(a-b)= 64

a³-b³-3(2)(4)=64

a³-b³-24=64

a³-b³=64+24

a³-b³= 88