document.write( "Question 409640: I need help solving this equation
\n" ); document.write( "7/2x+1 + 8/2x-1 = -4 (the first 2 are fractions) \n" ); document.write( "

Algebra.Com's Answer #288280 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"7%2F%282x+%2B+1%29+%2B+8%2F%282x+-+1%29+=+-4\"$
\n" ); document.write( "Multiply both sides by $\"%282x+%2B+1%29%2A%282x+-+1%29\"$
\n" ); document.write( " $\"7%2A%282x+-+1%29+%2B+8%2A%282x+%2B+1%29+=+-4%2A%284x%5E2+-+1%29\"$
\n" ); document.write( " $\"14x+-+7+%2B+16x+%2B+8+=+-16x%5E2+%2B+4\"$
\n" ); document.write( " $\"30x+%2B+1+=+-16x%5E2+%2B+4\"$
\n" ); document.write( " $\"16x%5E2+%2B+30x+-+3+=+0\"$
\n" ); document.write( "Use 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( " $\"a+=+16\"$
\n" ); document.write( " $\"b+=+30\"$
\n" ); document.write( " $\"c+=+-3\"$
\n" ); document.write( " $\"x+=+%28-30+%2B-+sqrt%28+30%5E2-4%2A16%2A%28-3%29+%29%29%2F%282%2A16%29+\"$
\n" ); document.write( " $\"x+=+%28-30+%2B-+sqrt%28+900+%2B+192+%29%29+%2F+32+\"$
\n" ); document.write( " $\"x+=+%28-30+%2B-+sqrt%28+1092+%29%29+%2F+32+\"$
\n" ); document.write( " $\"1092\"$ isn't a perfect square, so maybe I made
\n" ); document.write( "a mistake. I think the method is OK, though \n" ); document.write( "

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