-(4-5+2)-3-[1-[6+(-3-1)-(-2+4)]+3-4
-(4-5+2)-3-[1-[6+(-3-1)-(-2+4)]+3-4 though a ' ] ' is missing
- (1) - 3 - [1-[6 + ( -4) - (2) ] -1
-4 - [1- [6 -6] -1
-4 - 0
-4 possibly depends on the missing ]
If you really do not speak English.
It may be helpful for us to know what language or languages you do speak.