Genius do this question in 5 sec cammon let's do it – InterviewSolution

1.

Genius do this question in 5 sec cammon let's do it

Answer»

z=3(7+7i)+i(7+i)
z=21+21i+7i-1
Z=(21-1)+i(21+7)

z=20+28i. FINAL ANSWER
if we COMPARE :z=a+ib
A=20. B=28

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