document.write( "Question 769213: (4)/(x+1)-(2)/(x-1)=(3x+6)/(x^(2)-1) \n" ); document.write( "

Algebra.Com's Answer #468691 by Cromlix(4381) $\"\"$ $\"About$

You can put this solution on YOUR website!
4/(x + 1) - 2/(x - 1) = (3x + 6)/(x^2 - 1)
\n" ); document.write( "Common denominator = x^2 - 1
\n" ); document.write( "This because x^2 - 1 expands to give
\n" ); document.write( "(x + 1)(x - 1)
\n" ); document.write( "4(x - 1) - 2(x + 1) = (3x + 6)
\n" ); document.write( "4x - 4 - 2x - 2 = 3x + 6
\n" ); document.write( "4x - 2x - 3x = 6 + 4 + 2
\n" ); document.write( "- x = 12
\n" ); document.write( " x = - 12
\n" ); document.write( "Hope this helps.
\n" ); document.write( ":-) \n" ); document.write( "

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