document.write( "Question 196726: I am really struggling with Rational Expressions with Unlike Denominators. For example, this one I cannot match to the answer: a/4a^2-1 + 4/2a-1 +2. If you could please help me, I'd appreciate it \n" ); document.write( "
Algebra.Com's Answer #147449 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
\"a%2F%284a%5E2-1%29%2B4%2F%282a-1%29%2B2\" Start with the given expression.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"a%2F%28%282a-1%29%282a%2B1%29%29%2B4%2F%282a-1%29%2B2\" Factor the first denominator.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Take note that the LCD is \"%282a-1%29%282a%2B1%29\"\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"a%2F%28%282a-1%29%282a%2B1%29%29%2B%284%282a%2B1%29%29%2F%28%282a-1%29%282a%2B1%29%29%2B2\" Multiply the second fraction by \"%282a%2B1%29%2F%282a%2B1%29\" to get the denominator equal to the LCD.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"a%2F%28%282a-1%29%282a%2B1%29%29%2B%288a%2B4%29%2F%28%282a-1%29%282a%2B1%29%29%2B2\" Distribute\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " Multiply the third term \"2\" by \"%28%282a-1%29%282a%2B1%29%29%2F%28%282a-1%29%282a%2B1%29%29\" to get the denominator equal to the LCD.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " Multiply\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " FOIL\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( " Distribute\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%28a%2B8a%2B4%2B8a%5E2-2%29%2F%28%282a-1%29%282a%2B1%29%29\" Now that all the denominators are equal, we can combine the fractions.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%288a%5E2%2B9a%2B2%29%2F%28%282a-1%29%282a%2B1%29%29\" Combine like terms.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"%288a%5E2%2B9a%2B2%29%2F%284a%5E2-1%29\" FOIL the denominator.\r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "So \"a%2F%284a%5E2-1%29%2B4%2F%282a-1%29%2B2=%288a%5E2%2B9a%2B2%29%2F%284a%5E2-1%29\" where \"a%3C%3E-1%2F2\", or \"a%3C%3E1%2F2\" \r
\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );