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((sqrt x) - 2) / x - 4
I need to get it so I can put 4 in for x, and I can't right now because that would make the bottom zero. And I know there has to be a way to do it because it's in a section of problems where that is what I have to do for all of them.
And in case it isn't clear, the top is the square root of just x, minus two.
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Answers (1)
there is no problem putting x = 4 in denominator
unless you meant:
(sqrt(x) - 2) / (x - 4).
Otherwise, as you originally entered:
(sqrt(4) - 2) / 4 - 4
(2 - 2) / 4 - 4
0 / 4 - 4
0 - 4
-4
if you really did mean
(sqrt(x) - 2) / (x - 4)
then if x must = 4, the answer is "undefined."
At your level (I guess), that's acceptable because that's one of the things you're learning (but so is PEMDAS).
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Reference: sciencing.com/solve-math-problem-u...