document.write( "Question 297145: Solve by completing the square. Show your work.\r
\n" ); document.write( "\n" ); document.write( "x^2+8x=9 \n" ); document.write( "

Algebra.Com's Answer #214006 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"x%5E2%2B8x=9\"$
\n" ); document.write( "Take (1/2) the x coefficient, square it, add it to both sides.
\n" ); document.write( " $\"x%5E2%2B8x%2B16=9%2B16\"$
\n" ); document.write( " $\"%28x%2B4%29%5E2=25\"$
\n" ); document.write( "Take the sqaure root of both sides,
\n" ); document.write( " $\"x%2B4=0+%2B-+5\"$
\n" ); document.write( " $\"x=-4+%2B-+5\"$
\n" ); document.write( " $\"x=-9\"$ and $\"x=-1\"$ \r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "

\n" );