document.write( "Question 140412: the product of two consecutive even integers decreased by seven times the greater integer is 70. find the two integers \n" ); document.write( "
Algebra.Com's Answer #102258 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Let the two consecutive integers be: x, (x+2) \n" ); document.write( ": \n" ); document.write( "Write an equation for the statement: \n" ); document.write( "\"the product of two consecutive even integers decreased by seven times the greater integer is 70.\"\r \n" ); document.write( "\n" ); document.write( "x(x+2) - 7(x+2) = 70 \n" ); document.write( ": \n" ); document.write( "x^2 + 2x - 7x - 14 = 70 \n" ); document.write( ": \n" ); document.write( "x^2 - 5x - 14 - 70 = 0 \n" ); document.write( ": \n" ); document.write( "x^2 - 5x - 84 = 0 \n" ); document.write( "Factors to: \n" ); document.write( "(x-12)(x+7) = 0 \n" ); document.write( "Two solutions: \n" ); document.write( "x = -7 \n" ); document.write( "x = +12 \n" ); document.write( ": \n" ); document.write( "find the two integers: \n" ); document.write( ": \n" ); document.write( "The even solutions: 12, 14 \n" ); document.write( ": \n" ); document.write( ": \n" ); document.write( "Check solution using the statement: \n" ); document.write( "\"the product of two consecutive even integers decreased by seven times the greater integer is 70\" \n" ); document.write( "12 * 14 - 7 * 14 = \n" ); document.write( " 168 - 98 = 70; confirms the solution \n" ); document.write( " \n" ); document.write( " |