Question 1190629
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You don't ask a question, although we can make a pretty good guess what the question is....<br>
But we don't know what the given function is because you used the "√" symbol without parentheses.  We can't tell whether f(x) is (-√x)+3 or -√(x+3).<br>
Re-post, making it clear what the given function is, and making sure to ask an actual question.<br>