document.write( "Question 980868: One number is one less than twice another, and the difference between squares is 16, find the numbers
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Algebra.Com's Answer #601982 by Cromlix(4381)\"\" \"About 
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Hi there,
\n" ); document.write( "One number is one less than twice another
\n" ); document.write( "Another = n
\n" ); document.write( "One number = 1 - 2n
\n" ); document.write( "the difference between squares is 16
\n" ); document.write( "(1 - 2n)^2 - (n)^2 = 16
\n" ); document.write( "(1 - 4n + 4n^2) - n^2 = 16
\n" ); document.write( "Collect like terms
\n" ); document.write( "4n^2 - n^2 - 4n + 1 = 16
\n" ); document.write( "3n^2 - 4n - 15 = 0
\n" ); document.write( "Factorise
\n" ); document.write( "(3n + 5)(n - 3) = 0
\n" ); document.write( "So, 3n + 5 = 0
\n" ); document.write( ".....n = -5/3
\n" ); document.write( ".....n - 3 = 0
\n" ); document.write( "......n = 3
\n" ); document.write( "Either n = -5/3 and other number = 13/3
\n" ); document.write( "or n = 3 and other number = - 5
\n" ); document.write( "Hope this helps:-)
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