document.write( "Question 1143622: Given the equation (x+yi)(4+3i)=7-4i
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Algebra.Com's Answer #764478 by Edwin McCravy(20056) $\"\"$ $\"About$

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document.write( "FOIL out the left side:\r\n" );
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document.write( "Use the fact that i²= -1 to substitute (-1) for i²\r\n" );
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document.write( "Simplify the third term on the left:\r\n" );
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document.write( "The 2 REAL terms (that DON'T have i) on the left must \r\n" );
document.write( "equal the REAL term on the right (that DOESN'T have i) so:\r\n" );
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document.write( "The IMAGINARY terms on the left (that DO have i) must \r\n" );
document.write( "equal the IMAGINARY term on the right (that DOES have i), so:\r\n" );
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document.write( "Divide through by i:\r\n" );
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document.write( "So we have the system of equations:\r\n" );
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document.write( "Solve that system (preferably by the elimination method):\r\n" );
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document.write( " and \r\n" );
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document.write( "Edwin

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