document.write( "Question 1091925: Find a number such that the sum of the number at it's reciprocal is 8
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #706414 by ikleyn(52781)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "
\r\n" );
document.write( "\"x\" + \"1%2Fx\" = 8  ====> multiply both sides by x  ====>\r\n" );
document.write( "\r\n" );
document.write( "\"x%5E2+%2B+1\" = 8x  ====>  collect x-terms on the left side. Move the constant term to the right side  ====>\r\n" );
document.write( "\r\n" );
document.write( "\"x%5E2+-+8x\" = -1  ====>  add 16 to both sides  ====>\r\n" );
document.write( "\r\n" );
document.write( "\"x%5E2+-+2%2A4x+%2B+16\" = -1 + 16  ====>  complete the square on the left side  ====>\r\n" );
document.write( "\r\n" );
document.write( "\"%28x-4%29%5E2\" = 15  ====>  take the saure root from both sides  ====>\r\n" );
document.write( "\r\n" );
document.write( "x - 4 = +/- \"sqrt%2815%29\".\r\n" );
document.write( "\r\n" );
document.write( "\r\n" );
document.write( "Answer.  There are two solutions:   \"4+%2B+sqrt%2815%29\"  and  \"4-sqrt%2815%29\".\r\n" );
document.write( "
\r
\n" ); document.write( "\n" ); document.write( "Solved.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "I applied the completing the square method to solve the quadratic equation.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "To learn more about this method, see the leson\r
\n" ); document.write( "\n" ); document.write( "    - HOW TO solve quadratic equation by completing the square - Learning by examples \r
\n" ); document.write( "\n" ); document.write( "in this site.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );