Question

Помогите пожалуйста!!№

Answer 1

55 * 12 = (5 * 11) * (2 * 6) = (5 * 2) * (11 * 6) = 10 * 66 = 660

15 * 34 = (5 * 3) * (2 * 17) = (5 * 2) * (3 * 17) = 10 * 51 = 510

Answer 2

55*12=(11*5)*(6*2)=(11*6)*(2*5)=660
15*34=(3*5)*(17*2)=(3*17)*(2*5)=510