SOLUTION: I have a problem with an equation. 4/z-1 - 2/z+1 the answer is 2z+6/(z-1)(z+1) My question is how do you get that answer? Any help at all would be very appreciated! Than

Question 52727: I have a problem with an equation.
4/z-1 - 2/z+1 the answer is 2z+6/(z-1)(z+1) My question is how do you get that answer?
Any help at all would be very appreciated!
Thank you :o)
Answer by rchill(405) (Show Source): You can put this solution on YOUR website!
You need to have a common denominator for both fractions; hence, the common denominator of . So using this common denominator, we need to determine what each of the fractions is with that common denominator. The first fraction becomes , which simplifies to . The second fraction becomes , which simplifies to . Now, we have the , which simplifies to . Now combining like terms we get .
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