SOLUTION: ? X ? = -1

Algebra.Com
Question 1053944: ? X ? = -1
Found 3 solutions by ikleyn, Alan3354, MathTherapy:
Answer by ikleyn(52788)   (Show Source): You can put this solution on YOUR website!
.
? = "??"


Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
makes no sense.
Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

? X ? = -1
A number times its negative reciprocal = - 1 

RELATED QUESTIONS

(x+1)(x-1) (answered by checkley77)
(x+1)(x-1) (answered by checkley77)
(x+1)(x-1) (answered by checkley77)
1-x/x-1 (answered by tommyt3rd)
(x-1)(x 1) (answered by josmiceli,rohitfd)
|x+1|=x+1 (answered by josgarithmetic)
x/(x-1)=1-1/(1+x) (answered by Fombitz)
1. (x + 1)(x + 1)(x +... (answered by solver91311)
-1 < x + 1<... (answered by stanbon)
1/x-1/x-1 (answered by nerdybill,solver91311)