document.write( "Question 847807: (5-i)(9+6i) \n" ); document.write( "
Algebra.Com's Answer #510699 by Edwin McCravy(20056)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "(5-i)(9+6i)\r\n" );
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document.write( "Just FOIL it out, collect like terms, \r\n" );
document.write( "then substitute -1 for iČ\r\n" );
document.write( "and collect terms again.\r\n" );
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document.write( "FOIL it out:\r\n" );
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document.write( "45 + 30i - 9i - 6iČ\r\n" );
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document.write( "Combine the middle two terms\r\n" );
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document.write( "45 + 21i - 6iČ\r\n" );
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document.write( "Substitute -1 for iČ.\r\n" );
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document.write( "45 + 21i - 6(-1)\r\n" );
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document.write( "45 + 21i + 6\r\n" );
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document.write( "Combine like terms:\r\n" );
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document.write( "51 + 21i\r\n" );
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document.write( "Edwin
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