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Mathematics
Problem
Explain why
x
≥
5
2
x\ge \dfrac{5}{2}
x
≥
2
5
is necessary for the function
h
(
x
)
=
2
x
−
5
h(x)=\sqrt{2x-5}
h
(
x
)
=
2
x
−
5
to take real values.
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