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Fri 18 Feb, 2005 12:44 pm
Hi,
I their anyone out there who can help me with this nagging math problem?
Here is the problem:
9..............___..........3........+.......5
________..........._______......._______
x^2+4x-5...........x^2+5x........x^2-4x
Please treat the leader dots as space...
This is the answer that was at the back of the text:
11x-28
__________
x(x-2)(5+x)
thank you a million in advance for your help. :wink:
Least common demoninator
Are you sure you posted the problem correctly? I don't see how you can get (x-2) in the denominator of the answer. The LCD for this problem is
x(x+5)(x-4)(x-1)
When I work out the problem, I did achieve the same LCM as you did. However the answer to the back of the book, which is not my answer seems ot be entirely different.
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