Question 1200832
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<pre>

    (g o f)(x) = {{{(1/sqrt(x))^2}}} - {{{10/sqrt(x)}}} + {{{25}}}.


It can be further presented in this equivalent simplified form


    (g o f)(x) = {{{(1/sqrt(x) -5)^2}}}.


The domain is  { x | x > 0 }, the set of all positive real numbers.
</pre>

Solved.