Question:medium

Express the following expression in the form of a + ib.

\(\dfrac{(3+i√5)(3-i√5)}{(√3+√2i)-(√3-i√2)}\)

Updated On: Jan 27, 2026
Show Solution

Solution and Explanation

\(\dfrac{(3+i√5)(3-i√5)}{(√3+√2i)-(√3-i√2)}\)

\(=\dfrac{(3^2+(i√5)^2)}{√3+√2i-√3+i√2}\)

\(=\dfrac{9-5i^2}{(2√2i)}\)

\(=\dfrac{9+5}{(2√2i)}×\dfrac{i}{i}\)

\(=\dfrac{14i}{2√2i^2}\)

\(=\dfrac{-7i}{√2}\)

\(=\dfrac{-7i}{√2}×\dfrac{√2}{√2}\)

\(=\dfrac{-7√2i}{2}\)    (Ans)

Was this answer helpful?
0