Răspuns :
Dam factor comun pe 3^2
3 ^ 2 × ( 5 + 7 ) =
9 × 12 = 108
Verificare:
3 ^ 2 × 5 + 3 ^ 2 × 7 =
9 × 5 + 9 × 7 =
45 + 63 =
108
Succes!!!
3 ^ 2 × ( 5 + 7 ) =
9 × 12 = 108
Verificare:
3 ^ 2 × 5 + 3 ^ 2 × 7 =
9 × 5 + 9 × 7 =
45 + 63 =
108
Succes!!!