To solve this expression, we can follow the order of operations (PEMDAS/BODMAS):

First, we perform the exponentiation: 8 x 10^1 = 8 x 10 = 80.

Next, we perform the subtraction: 17 - 0 = 17.

Finally, we subtract the result from the previous step from the result of the exponentiation: 80 - 17 = 63.

Therefore, the value of the expression 17,8 x 10^1 - 17 - 0,8 is 63.