document.write( "Question 962829: Could you please help solve this quadratic equation using completing the square method?\r
\n" ); document.write( "\n" ); document.write( "x^2+9x+8=0 \n" ); document.write( "

Algebra.Com's Answer #588248 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"+x%5E2+%2B+9x+%2B+8+\"$
\n" ); document.write( " $\"+x%5E2+%2B+9x+%2B+%28+9%2F2+%29%5E2+=+-8+%2B+%28+9%2F2+%29%5E2+\"$
\n" ); document.write( " $\"+x%5E2+%2B+9x+%2B+81%2F4+=+-32%2F4+%2B+81%2F4+\"$
\n" ); document.write( " $\"+x%5E2+%2B+9x+%2B+81%2F4+=+49%2F4+\"$
\n" ); document.write( " $\"+%28+x+%2B+9%2F2+%29%5E2+=+%28+7%2F2+%29%5E2+\"$
\n" ); document.write( "Take the square root of both sides
\n" ); document.write( " $\"+x+%2B+9%2F2+=+7%2F2+\"$
\n" ); document.write( " $\"+x+=+-1+\"$
\n" ); document.write( "and, taking the negative square root of $\"+7%2F2+\"$ ,
\n" ); document.write( " $\"+x+%2B+9%2F2+=+-7%2F2+\"$
\n" ); document.write( " $\"+x+=+-8+\"$
\n" ); document.write( "-----------------
\n" ); document.write( "check:
\n" ); document.write( " $\"+x+%2B+1+=+0+\"$
\n" ); document.write( " $\"+x+%2B+8+=+0+\"$
\n" ); document.write( " $\"+%28+x+%2B+1+%29%2A%28+x+%2B+8+%29+=+0+\"$
\n" ); document.write( " $\"+x%5E2+%2B+9x+%2B+8+=+0+\"$
\n" ); document.write( "OK
\n" ); document.write( " \n" ); document.write( "

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