Math Chapter Wise Complex Number, De Moivre's Theorem And Nth Root Of Unity English MCQ UP PGT-2016 (02-02-2019) Q.If 3 2i A iB, 7 4i − + = + then value of A–B is A1/5 B2/5 C3/5 D−1/5 Show answer Correct answer: 3/5