Answer:
A
Step-by-step explanation:
You can eliminate B and D because it’s using , but the question is asking . So it’s either A or C. They are both written correctly, but out of the two, A is correct because just that x ≠ part of it is what makes it true.
The reason being is that the only thing that won’t make true is when the denominator equals 0, because anything divided by 0 is undefined. So, when you plug for x in the denominator you get: . The part just turns into 7, and 7 - 7 is 0. So you don’t want x to equal .
<u>So the answer is A:</u> , ±
There you go my friend!
I hope you understand and that this helps with your question! :)