SOLUTION: which of the following is equal to the rational expression when x ≠ -1 or -7? (x+1)(x-1)/(x+7)(x+1) a.x+1/x+7 b.x+7/x-1 c.x-1/x+7

Algebra ->  Rational-functions -> SOLUTION: which of the following is equal to the rational expression when x ≠ -1 or -7? (x+1)(x-1)/(x+7)(x+1) a.x+1/x+7 b.x+7/x-1 c.x-1/x+7      Log On


   



Question 145444: which of the following is equal to the rational expression when x ≠ -1 or -7?
(x+1)(x-1)/(x+7)(x+1)
a.x+1/x+7
b.x+7/x-1
c.x-1/x+7

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
((x+1)(x-1))/((x+7)(x+1))=(x-1)/(x+7) The (x+1)'s cancel
Ed