document.write( "Question 447847: Find two consecutive positive integers such that the sum of their squares is 41. \n" ); document.write( "
Algebra.Com's Answer #308255 by algebrahouse.com(1659)![]() ![]() You can put this solution on YOUR website! \"Find two consecutive positive integers such that the sum of their squares is 41.\"\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x = 1st positive integer \n" ); document.write( "x + 1 = 2nd positive integer\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "x² + (x + 1)² = 41 {sum of squares is 41} \n" ); document.write( "x² + (x + 1)(x + 1) = 41 {when you square a binomial, multiply it by itself} \n" ); document.write( "x² + x² + 2x + 1 = 41 {used foil method} \n" ); document.write( "2x² + 2x + 1 = 41 {combined like terms} \n" ); document.write( "2x² + 2x - 40 = 0 {subtracted 41 from both sides} \n" ); document.write( "2(x² + x - 20) = 0 {factored 2 out} \n" ); document.write( "2(x + 5)(x - 4) = 0 {factored into two binomials} \n" ); document.write( "x + 5 = 0 or x - 4 = 0 {set each factor equal to 0, excluding the 2} \n" ); document.write( "x = -5 or x = 4 {solved each equation for x} \n" ); document.write( "x = 4 {only positive integer} \n" ); document.write( "x + 1 = 5 {substituted 4, in for x, into x + 1}\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "4 and 5 are the consecutive positive integers \n" ); document.write( "www.algebrahouse.com \n" ); document.write( " |