Question

Si: m * n =(m +n).(m- - mn + n-) Calcular: 2 * 1

Answer 1

Es igual a 2 Listo te sale 2

Answer 2

2 * 1 = (2+1) (2 + 2 - 1)

2 * 1 = 3 (3)

2 * 1 = 9