Question

Imaginary question

Answer 1

\[(3\sqrt{2}+i)(\sqrt{2}-i)\]

Answer 2

Answer given in the book
\[2\sqrt{2}+2i\]

Answer 3

\[(3\sqrt{2}+i)(\sqrt{2}-i)\]\[=3\sqrt{2}\times\sqrt2-3\sqrt2i+\sqrt{2}i-i\times i\]