document.write( "Question 1027956: Write a quadratic equation and solve\r
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document.write( "The difference of two numbers is 6 and the difference of their squares is 60. Find the numbers \n" );
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Algebra.Com's Answer #643133 by Theo(13342)![]() ![]() You can put this solution on YOUR website! let a be the larger number. \n" ); document.write( "let b be the smaller number.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "you get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "a - b = 6 \n" ); document.write( "a^2 - b^2 = 60\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "in the first equation, solve for a to get a = b + 6\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "in the second equation, replace a with (b+6) to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "(b+6)^2 - b^2 = 60\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "simplify to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "b^2 + 12b + 36 - b^2 = 60\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "combine like terms to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "12b + 36 = 60\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "subtract 36 from both sides of this equation to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "12b = 24\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "solve for b to get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "b = 2\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "if b = 2, the a - b = 6 becomes a - 2 = 6\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "add 2 to both sides of this equation to get a = 8\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "when a = 8 and b = 2, you get:\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "a - b = 8 - 2 = 6 \n" ); document.write( "a^2 - b^2 = 8^2 - 2^2 = 64 - 4 = 60\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "this confirms the solution is correct.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "the numbers are 8 and 2.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "subtract the smaller number from the larger number and you get 6.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "subtract the square of the smaller number from the square of the larger number and you get 60.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |