Looks like yellow nutsedge, you can use Dismiss but be careful applying it because Bermuda is sensitive to it.

There's also Sedge Hammer, but doesn't work as well - it's acts more like a suppresant.

Pulls out pretty easy

It's green kyllinga. You can tell by the flower head. It is a sedge like nutsedge but this one is drought tolerant and harder to get rid of than regular nutsedge. The sedge killers may hurt the bermuda but the bermuda will grow back. It's called tough love. Be sure the bermuda is well fertilized before you spray. Or you could wait until the bermuda goes COMPLETELY dormant and spot spray the sedge killer the weeds.