1.72 = A 0.72 = B A^3 - B^3 - 3AB = ( A - B ) * ( A^2 + AB + B^2 ) - 3AB ........................................................................ ( 1.72 - 0.72 ) * ( 2.9584 + 1.2384 + 0.5184 ) - 3.7152 = = 4.7152 - 3.7152 = 1 Ответ 1