document.write( "Question 253160: Find two positive real numbers whose sum is 40 and whose product is maximum without involving the intercepts.\r
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Algebra.Com's Answer #185479 by drk(1908)\"\" \"About 
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Let X and Y be the two numbers.
\n" ); document.write( "WE ned a formula for sum:
\n" ); document.write( "(i) \"x+%2B+y+=+40\"
\n" ); document.write( "we need a formula for area:
\n" ); document.write( "(ii) \"A+=+XY\"
\n" ); document.write( "Now, maximum quadrilaterals are squares.
\n" ); document.write( "So, x = y = 20.
\n" ); document.write( "20 + 20 = 40
\n" ); document.write( "20 * 20 = 400 (max product)
\n" ); document.write( "So, our coordinate is (20,20)
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