document.write( "Question 121335This question is from textbook Demana, Waits, Foley, Kennedy Precalculus Graphical, Numerical, Algebraic
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document.write( ": Can you please help me understand the method of arriving at the answer of this problem? Thank you.\r
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document.write( "In my textbook this was the exercise question
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document.write( " Write the product in standard form:
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document.write( "(2+3i)(2-i) \r
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document.write( "The answer in the back of the book was X= -4 +or- the sqrt of the fraction 8/3.\r
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document.write( "I don't understand how they arrived at this answer. \n" );
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Algebra.Com's Answer #89046 by checkley71(8403)![]() ![]() ![]() You can put this solution on YOUR website! 2+3i \n" ); document.write( "2-i \n" ); document.write( "---------------------------------------- \n" ); document.write( "4+6i-2i-3i^2 (i^2)=-1 \n" ); document.write( "4-4i-3*-1 \n" ); document.write( "4-4i+3 \n" ); document.write( "7-4i ANSWER. \n" ); document.write( " \n" ); document.write( " |