document.write( "Question 986899: The product of two numbers is -192 and their sum is 4. What are the two numbers? \n" ); document.write( "
Algebra.Com's Answer #607702 by Alan3354(69443)\"\" \"About 
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The product of two numbers is -192 and their sum is 4. What are the two numbers?
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\n" ); document.write( "Find a pair of factors of 192 that differ by 4. One is negative, one is positive.
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\n" ); document.write( "1*192 NG
\n" ); document.write( "2*96 NG
\n" ); document.write( "etc.
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\n" ); document.write( "Or, do all this:
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\n" ); document.write( "The product of two numbers is -192
\n" ); document.write( " xy = -192
\n" ); document.write( " Their sum = 4
\n" ); document.write( " x + y = 4
\n" ); document.write( " y = 4 - x
\n" ); document.write( " Substitute 4 - x into
\n" ); document.write( " equation xy = -192
\n" ); document.write( " x(4 - x) = -192
\n" ); document.write( " Multiply out:
\n" ); document.write( " = 4x - x^2 = -192
\n" ); document.write( " Sort out
\n" ); document.write( " 192 + 4x - x^2 = 0
\n" ); document.write( " Factorise:
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\n" ); document.write( "*************** Then at this point, find a pair of factors of 192 that differ by 4.
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\n" ); document.write( " (12 + x)(16 + x-) = 0
\n" ); document.write( " 12 + x = 0 \n" ); document.write( "
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