You can simplify the left side and get x, so why is this D and not C?
Hint;
What are the constraints for x
Is it > 0, <0, =0 ?
Thanks! There are no constraints for B, but x cannot equal to 2 in A. So A and B can be equal or different. Is that it?
We could just say that the answer is not defined for x = -2, so instead of doing 3 calculations, we can do just 1 right
Thought process is correct but 2 is incorrect.
If X = 2, both quantities are equal
There is one case where the quantity on the left is undefined
That is where x = -2
The denominator is x + 2;
–
We’re aware any division where the denominator is 0 = undefined
So can X have a value that makes the denominator = 0
Yes, -2
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Right!
-2 is the one case here