-72•(2/3-5/6)в степени 3

Question

-72•(2/3-5/6)в степени 3

Answer 1

-72 (2/3-5/6)^3=(-72)(-(1/6)^3)=72 (1/3)^3=2×6^2×6^-3=2^1×2^2×3^2×3^-3×2^-3=2^1+2-3×3^2-3=2^0×3^-1=1×3^-1=1/3