Tính tổng tất cả các căn bậc n (n ≥ 2) của một số phức z bất kỳ z(z1 + z2 + z3) = zz1 + zz2 + zz3.

The two-way relative frequency table shows the relative frequencies of late-night workers and day workers who do or do not drink coffee. what percent of late-night workers do not drink coffee? enter your answer in the box as a percentage. work late-night jobs work day jobs drink coffee 0.733 0.455 do not drink coffee 0.267 0.545