document.write( "Question 343890: 2x(x+1)=7 \n" ); document.write( "

Algebra.Com's Answer #246025 by Fombitz(32388) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"2x%28x%2B1%29=7\"$
\n" ); document.write( " $\"2x%5E2%2B2x-7=0\"$
\n" ); document.write( "Use the quadratic formula,
\n" ); document.write( " $\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"$
\n" ); document.write( " $\"x+=+%28-2+%2B-+sqrt%28+2%5E2-4%2A2%2A%28-7%29+%29%29%2F%282%2A2%29+\"$
\n" ); document.write( " $\"x+=+%28-2+%2B-+sqrt%28+4%2B56%29%29%2F4+\"$
\n" ); document.write( " $\"x+=+%28-2+%2B-+sqrt%28+60+%29%29%2F4+\"$
\n" ); document.write( " $\"x+=+%28-2+%2B-+2sqrt%28+15+%29%29%2F4+\"$
\n" ); document.write( " $\"highlight%28x+=+%28-1+%2B-+sqrt%28+15+%29%29%2F2%29+\"$ \n" ); document.write( "

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