document.write( "Question 436297: simplify: (3+i)(l-i) \n" ); document.write( "

Algebra.Com's Answer #301833 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "simplify: \r
\n" ); document.write( "\n" ); document.write( " $\"%283%2Bi%29%28l-i%29\"$ \r
\n" ); document.write( "\n" ); document.write( "= $\"3-3i%2Bi-i%5E2\"$ \r
\n" ); document.write( "\n" ); document.write( "= $\"3-2i-%28-1%29\"$ \r
\n" ); document.write( "\n" ); document.write( "= $\"3-2i%2B1\"$ \r
\n" ); document.write( "\n" ); document.write( "= $\"4-2i\"$ \r
\n" ); document.write( "\n" ); document.write( "= $\"2%282-i%29\"$ \n" ); document.write( "

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