Backspace key doesn't work on macbook pro

well..... i don't know what it is but my backspace key works like the cmd+c short cut :S and it only works as backspace when i use the shift+backspace i really dont know what to dooooo 😟

it was working good but when i came back it was like that .... i've already try by turning off the mbp

the key is find i can use it for other shortcuts

i have already try on the keyboard preferences and nothing

help!!!!!!!!! and sorry for my awful english