SOLUTION: hi i am trying to work out x^2-18=0 and cant seem to work out the right answer i came to (x+9)(x-2)=9,-2 please help regards jordan

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: hi i am trying to work out x^2-18=0 and cant seem to work out the right answer i came to (x+9)(x-2)=9,-2 please help regards jordan      Log On


   

Question 449496: hi i am trying to work out x^2-18=0 and cant seem to work out the right answer i came to (x+9)(x-2)=9,-2
please help
regards
jordan
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2-18=0
x%5E2=18
x=(+/-)sqrt(18)
x=sqrt%2818%29
OR
x=-sqrt%2818%29