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The standard form of (2 + i)/(2 - i) is
A(3 + 4i)/5
B(3 - 4i)/5
C(4 + 3i)/5
D(3 + 4i)/3
Answer & Solution
Correct answer: A. (3 + 4i)/5
Multiply by (2 + i)/(2 + i): numerator (2 + i)^2 = 3 + 4i, denominator 4 + 1 = 5.
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