document.write( "Question 1053018: Given that z = 10 - 3i and w = 4 + 2i are complex numbers, find: a) zw b) z/w
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Algebra.Com's Answer #668333 by ikleyn(52782) $\"\"$ $\"About$

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\n" ); document.write( "Given that z = 10 - 3i and w = 4 + 2i are complex numbers, find: a) zw b) z/w
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document.write( "zw = (10 - 3i)*(4 + 2i) = 10*4 + 10*2i + (-3i)*4 + (-3i)*(2i) = \r\n" );
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document.write( "                           40  + 20i   -  12i    + (-6i^2)    =   (use i^2 = -1)\r\n" );
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document.write( "                           40  + (20-12)i        + (-6)*(-1)  = \r\n" );
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document.write( "                           40  +  8i             + 6          =\r\n" );
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document.write( "                           46  +  8i.\r\n" );
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\n" ); document.write( "\n" ); document.write( "See the lesson \r
\n" ); document.write( "\n" ); document.write( " - Solved problems on arithmetic operations on complex numbers\r
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