B and C make sense to me.
The answer is

.
Before we rationalize the denominator, we must simplify the numerator and denominator. We evaluate the square root on the top, and combine like terms on the bottom:

To rationalize the denominator, we multiply by the conjugate. The conjugate is found by making the imaginary term of the complex number, the i part, the opposite sign. The conjugate of -2-i is -2+i:
Answer:
Hi! The answer to your question is x > 2
Step-by-step explanation:
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Hope this helps!!
- Brooklynn Deka
is this the full question?