SOLUTION: Solve: s-4√s-1=0

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Solve: s-4√s-1=0       Log On


   

Question 191926: Solve:
s-4√s-1=0
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!



The trick to this one is a substitution. Let , then



Using the quadratic formula:




You can do your own arithmetic to check that



Then



Therefore



and



Check:



and




John