document.write( "Question 633790: perform the indicated operations and simplify the following expression
\n" ); document.write( "2z-1/z^2+z-6 minus 3z-5/z^2-2z-15 plus 2z-3/z^2-7z+10\r
\n" ); document.write( "\n" ); document.write( "If someone could help me figure out how to do this I would appreciate it \n" ); document.write( "
Algebra.Com's Answer #399303 by KMST(5328)\"\" \"About 
You can put this solution on YOUR website!
I believe the problem is
\n" ); document.write( "=(2z-1)/(z^2+z-6) - (3z-5)/(z^2-2z-15) + (2z-3)/(z^2-7z+10)
\n" ); document.write( "(When you do cannot draw horizontal fraction lines, you need the parentheses. Without them, it does not mean the same).
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\n" ); document.write( "We need to do some factoring first, to make it easy to find a common denominator next
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\n" ); document.write( "= = =
\n" ); document.write( "= = \"%282z%5E2-11z%2B5-3z%5E2%2B11z-10%2B2z%5E2%2B3z-9%29%2F%28z-5%29%2F%28z-2%29%2F%28z%2B3%29\" =
\n" ); document.write( "= \"%28z%5E2%2B3z-14%29%2F%28z-5%29%2F%28z-2%29%2F%28z%2B3%29\"
\n" ); document.write( "Assuming I did not make a mistake in the calculations, that's the end result. There is no way to simplify that expression.
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\n" ); document.write( "NOTE: I tried hard not to over-explain (as I usually do). If more explanation is needed, I apologize. In that case, just ask further (as a new question or in a thank you note). \n" ); document.write( "
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