SOLUTION: ADD
(9/z-4 )+ (9/z+4)
Algebra.Com
Question 197563: ADD
(9/z-4 )+ (9/z+4)
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Since you are trying to add fractions, you must have the same denominator.
A "common denominator" is (z-4)(z+4)
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