I am trying to find the complex power(apparent power) of the circuit with input 200Vrms. The input is applied to the equivalent resistance (resistor + inductor) (0.8+5.6j). The complex power is calculated as |V|^2/(0.8-5.6j)= 200^2/(0.8-5.6j).

I understand all the logic but how is the impedance (0.8+5.6j) changed to (0.8-5.6j) during the calculation. (normally, impedance for resistor in series with inductor = r+jwL) but why is -(minus) used during the calculation?