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y=√(x-5)
Igualamos a cero lo que tenemos dentro de la raiz
x-5≥0
x≥5
Dominio f(x): x∈[5,∞+)
y=√(x-5)
y²=(√(x-5))²
y²=x-5
y²+5=x
Recorrido f(X): y∈[0,∞+)
Rec(x)={y pertenece a todos los R, tales que y >= 0}