document.write( "Question 855998: the sum of the square of a number and five times the number is 84.find the number \n" ); document.write( "
Algebra.Com's Answer #515673 by mananth(16946) You can put this solution on YOUR website! let the number be x\r \n" ); document.write( "\n" ); document.write( "x^2+5x=84\r \n" ); document.write( "\n" ); document.write( "x^2+5x-84\r \n" ); document.write( "\n" ); document.write( "x^2+12x-7x-84=0\r \n" ); document.write( "\n" ); document.write( "x(x+12)-7(x+12)=0\r \n" ); document.write( "\n" ); document.write( "(x+12)(x-7)=0\r \n" ); document.write( "\n" ); document.write( "x=-12 OR x=7 \n" ); document.write( " |