Question

A expressao (3 + ab) x (ab - 3 ) e ingual a

Answer 1

Oi Valhlauama

(3 + ab)*(ab - 3) = 3ab - 9 + a²b² - 3ab = a²b² - 9 

.

Answer 2

(3 + ab) *(ab-3)

3ab - 9a²b² -3ab

a²b²- 9