Question 1051479
{{{ x }}} can't be negative since that makes
{{{ sqrt(x) }}} imaginary
So, the domain is 0 < x < + infinity
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{{{ f(x) }}} can't be any more negative than {{{ -2 }}},
but can be any positive value, so
the range is -2 < f(x) < + infinity
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Here's the plot:
{{{ graph( 400, 400, -10, 10, -10, 10, sqrt(x) - 2 ) }}}