document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1128977>Question 1128977</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Among all pairs of numbers whose difference is 8&#8203;, find a pair whose product is as small as possible.  What is the minimum&#8203; product?\r<BR>\n" );
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document.write( "The pair of numbers whose difference is 8 and whose product is as small as possible is <BR>\n" );
document.write( "____________________________________ ?<BR>\n" );
document.write( "&#8203;(Use a comma to separate&#8203; answers.)\r<BR>\n" );
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document.write( "The minimum product is _____________________________________________? </SPAN>\n" );
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document.write( "Let the two numbers be x and x+8; then the product is x^2+8x.<br><BR>\n" );
document.write( "The minimum value of a quadratic function ax^2+bx+c is when x = -b/2a; in this problem that is -8/2 = -4.<br><BR>\n" );
document.write( "So the two numbers are x=-4 and x+8 = 4; the minimum product is -16. </SPAN>\n" );
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