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.Com
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) (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
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