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31-07-2017
Mathematics

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given g(x)=Squareroot x-4 and h(x)=2x-8, what are the restriction on the domain of gofh?

x>?

Respuesta :

31-07-2017

[tex]g(f(x)) = \sqrt{(2x - 8) - 4}[/tex]
[tex] = \sqrt{2x - 12}[/tex]

Now, there's a restriction inside the square root
Thus, 2x - 12 ≥ 0
2x ≥ 12
x ≥ 6

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