I think its around the same time as an average NFL game so probably 2 maby 3 hours long
The answer is

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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:
C. m k L hope it helps! not 100% sure