Question

(1,5)^-2 +3^-3×21=
найдете значение выражения

Answer 1

1,5⁻² + 3⁻³ *21 = (3/2)⁻² + 7*3*3⁻³ = (2/3)² + 7/3² = 4/9 + 7/9 = 11/9 = 1 2/9