Calculate reciprocal of z=0.8-1.8i:

Correct result:

Re =  0.21
Im =  0.46


1z=10.81.8i=10.81.8i.0.8+1.8i0.8+1.8i Re1z=0.80.82+(1.8)2=0.21
Im1z=1.80.82+(1.8)2=0.46 1z=0.21+0.46i

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