Question 874324
Assuming {{{x>=0}}}



{{{(sqrt(x)-sqrt(5))^2}}}



{{{(sqrt(x)-sqrt(5))(sqrt(x)-sqrt(5))}}}



{{{sqrt(x)*(sqrt(x)-sqrt(5))-sqrt(5)*(sqrt(x)-sqrt(5))}}}



{{{sqrt(x)*(sqrt(x))+sqrt(x)*(-sqrt(5))-sqrt(5)*(sqrt(x))-sqrt(5)*(-sqrt(5))}}}



{{{sqrt(x*x)-sqrt(x*5)-sqrt(5*x)+sqrt(5*5)}}}



{{{sqrt(x^2)-sqrt(5x)-sqrt(5x)+sqrt(5^2)}}}



{{{x-sqrt(5x)-sqrt(5x)+5}}}



{{{x-2*sqrt(5x)+5}}}



{{{x+5-2*sqrt(5x)}}}



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So {{{(sqrt(x)-sqrt(5))^2}}} expands and simplifies to {{{x+5-2*sqrt(5x)}}} (where {{{x>=0}}})