help with this q (1 Viewer)

[blacktown_]

Find the value of n for which the equation (n+2)x^2 +3x-5=0 has one root triple the other

can you please show the working out for the whole question
i tried doing it before but it didn't work out

thanks

 

[Shadowdude]

http://community.boredofstudies.org/showthread.php?t=296243