Is it possible to reverse a sha256 hashed value if we know part of the input value?

I’m a total noob, so please help me out.
Suppose something is hashed in sha256. If we know the value of some part of the hashed text, can we figure out the entire text?
Ex: xxxxxx + j4l58jl6j4l6j4 = 64j1l5l64lkh41l654kj165l4j1566ghj6ghj6g1… Continue reading Is it possible to reverse a sha256 hashed value if we know part of the input value?