Answer:
A
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
.
So the answer is A:
,
±
There you go my friend!
I hope you understand and that this helps with your question! :)