Can't uninstall DU Speed Booster & Google Alphabet Plugin. Help!

[Enbix]

This is some serious malware! I've uninstalled them several times and they keep installing themselves automatically.

Tried clearing data and cache and then uninstalling them... nothing, they reappear.

Did like 4 factory resets but still, nothing works (yes, I unchecked the "automatic restore" and "backup my data" boxes)

Please, please help me, this is driving me crazy! It shows pop up adds and drains my battery.

 

[MAS98]

Try to go to settings/accessibility/ services then turn "SPEED+ engine" off . Then go to security (in settings) then "Device administrators then uncheck DU speed booster
I hope this will help you