Question

(5+b)³ forma reduzida

Answer 1

= (5 + b)³

= (5 + b)².(5 + b)

= (25 + 2.5b+ b²).(5 + b)

= (25 + 10b + b²).(5 + b)

= (b² + 10b + 25).(b + 5)

= b².b + 5.b² + 10b.b + 5.10b + 25.b + 25.5

= b³ + 5b² + 10b² + 50b + 25b + 125

= b³ + 15b² + 75b + 125