Is this math or what| ITMW #6| Missing digit

Number Theory Level 4

A 3 digit number consist of 9,5 and x

When digits are reversed and subtracted from the original number the answer is a 3 digit number made with the same digits but arranged in different order

If x is the missing digit and S = x^(x) + x^(2) + x

Y = S^(2) + 2S - 24

Find Y-16704


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