document.write( "Question 339346: The product of 2 consecutive positive integers is 71 more than their sum. Find the integers.\r
\n" );
document.write( "\n" );
document.write( "I have been reviewing my text for a couple of hours now. I cannot figure this one out. Please, please, please help!!!!\r
\n" );
document.write( "\n" );
document.write( "Thank you!! \n" );
document.write( "
Algebra.Com's Answer #243191 by Kalmetam(43)![]() ![]() ![]() You can put this solution on YOUR website! Hi! Try to make your own equation, then it'll be easy..\r \n" ); document.write( "\n" ); document.write( "So two consecutive positive integers?\r \n" ); document.write( "\n" ); document.write( "Let's say one integer is \"x\" and since they are consecutive, that means the 2nd is x+1.. right? \r \n" ); document.write( "\n" ); document.write( "So let's try to make an equation:\r \n" ); document.write( "\n" ); document.write( "The PRODUCT of two consecutive integers.. so that would be\r \n" ); document.write( "\n" ); document.write( "x(x+1)\r \n" ); document.write( "\n" ); document.write( "and the second part is 71 more than their sum.. \n" ); document.write( "how can you express that without using other variables? \n" ); document.write( "Well, the two numbers are x and x+1 right? and the product is 71 more.. right?\r \n" ); document.write( "\n" ); document.write( "So you'd get on that side.. 71+[x+(x+1)]\r \n" ); document.write( "\n" ); document.write( "So in the end.. x(x+1)=71+[x+(x+1)]\r \n" ); document.write( "\n" ); document.write( "Try simplifying the left side:\r \n" ); document.write( "\n" ); document.write( "x+x^2=71+[x+(x+1)]\r \n" ); document.write( "\n" ); document.write( "Now simplify the right side:\r \n" ); document.write( "\n" ); document.write( "x+x^2=72+2x\r \n" ); document.write( "\n" ); document.write( "Move over that x from the left to the right to simplify it more\r \n" ); document.write( "\n" ); document.write( "x^2=72+x\r \n" ); document.write( "\n" ); document.write( "Now square root both sides to cancel out the x^2\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "\n" ); document.write( "then if you plot bothsides on a graph\r \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "So apparently, the answer is x=9 (meaning that the second number (x+1) is 10)\r \n" ); document.write( "\n" ); document.write( "Let's check:\r \n" ); document.write( "\n" ); document.write( "9*10=90 \n" ); document.write( "9+10=19\r \n" ); document.write( "\n" ); document.write( "and the product is 71 more than the sum, right?\r \n" ); document.write( "\n" ); document.write( "90-19=71..\r \n" ); document.write( "\n" ); document.write( "So our answers must be correct..\r \n" ); document.write( "\n" ); document.write( "the numbers are 9 and 10 \n" ); document.write( " |