SOLUTION: r+(8/r)=-9

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: r+(8/r)=-9      Log On


   



Question 365310: r+(8/r)=-9
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
Multiply both sides of the equation by r: r^2 + 8 = -9r,
r^2+9r+8 = 0,
(r+1)(r+8) = 0,
r = -1 or r = -8. Since none of them are zeros (which make the denominator 0), these are the final answers.