document.write( "Question 427167: what are the solutions to the equation x^2+7x=-12 \n" ); document.write( "

Algebra.Com's Answer #297066 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"x%5E2%2B7x=-12\"$
\n" ); document.write( "To complete the square, take 1/2 of the
\n" ); document.write( "coefficient of $\"x\"$ , square it, and add
\n" ); document.write( "it to both sides
\n" ); document.write( " $\"+x%5E2+%2B+7x+%2B+%287%2F2%29%5E2+=+-12+%2B+%287%2F2%29%5E2+\"$
\n" ); document.write( " $\"+x%5E2+%2B+7x+%2B+49%2F4+=+-48%2F4+%2B+49%2F4+\"$
\n" ); document.write( " $\"+%28+x+%2B+7%2F2+%29%5E2+=+1%2F4+\"$
\n" ); document.write( "take the square root of both side
\n" ); document.write( " $\"+x+%2B+7%2F2+=+1%2F2+\"$
\n" ); document.write( " $\"+x+=+-3+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+x+%2B+7%2F2+=+-1%2F2+\"$
\n" ); document.write( " $\"+x+=+-4+\"$
\n" ); document.write( "----------
\n" ); document.write( "You can check by plugging in $\"-3\"$ for $\"x\"$
\n" ); document.write( "and then $\"-4\"$ for $\"x\"$ \n" ); document.write( "

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