The simplified form of "x minus 4 over x squared minus x minus 12"*"x minus 4 over x squared minus 8x plus 16" has to be determined.

This is: `((x - 4)/(x^2 - x - 12))*((x - 4)/(x^2 - 8x + 16))`

= `((x - 4)/((x - 4)(x - 3)))*((x - 4)/(x - 4)^2)`

= `(1/(x - 3))*(1/(x - 4))`

=> `1/((x - 3)(x - 4))`

**The simplified form of the given expression is `1/((x - 3)(x - 4))` **

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