SOLUTION: I am trying to figure out how to start this problem. I saw it and I immediately was confused. Please help me solve this equation: {{{ [((x+1)/(x-1)+1)/((x+1)/(x-1)-1)]^5 }}}

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: I am trying to figure out how to start this problem. I saw it and I immediately was confused. Please help me solve this equation: {{{ [((x+1)/(x-1)+1)/((x+1)/(x-1)-1)]^5 }}}       Log On


   



Question 306759: I am trying to figure out how to start this problem. I saw it and I immediately was confused. Please help me solve this equation: +%5B%28%28x%2B1%29%2F%28x-1%29%2B1%29%2F%28%28x%2B1%29%2F%28x-1%29-1%29%5D%5E5+





Answer by dabanfield(803) About Me  (Show Source):
You can put this solution on YOUR website!
[((x+1)/(x-1)+1)/((x+1)/(x-1)-1)]^5
Let's look at the expression that is being raised to the 5th power. A common denominator for the terms is x-1. Rewriting 1 as (x-1)/(x-1):
((x+1)/(x-1)) + (x-1)/(x-1) / ((x+1)/(x-1) - (x-1)/(x-1))
Combining terms we have:
(((x+1) + (x+1))/(x-1)) / (((x+1) - (x-1))/(x-1)) =
((2x+2)/(x-1)) / (2/(x-1))
Multiplying numerator and denominator above by (x-1) gives:
(2x+2)/2 = 2*(x+1)/2 = x+1
So the original problem reduces to (x+1)^5
You could expand out (x+1)^5.