carrotjuice
New member
- Joined
- Feb 9, 2009
- Messages
- 2
Hello there. I'm having some trouble with this. The problem is 2x^2+10x+2=0 and the answers to choose from are:
a. -5±?21/2
b. -5±?29/2
c. -5±?21/4
d. -10±?21/2
I don't really understand though. I keep getting -10±?84/4 and if I simplify it by 2, the ?84 turns into ?42... I know I'm doing this wrong, but I don't get it... Any help would be appreciated.
a. -5±?21/2
b. -5±?29/2
c. -5±?21/4
d. -10±?21/2
I don't really understand though. I keep getting -10±?84/4 and if I simplify it by 2, the ?84 turns into ?42... I know I'm doing this wrong, but I don't get it... Any help would be appreciated.