Slimplify 2-2/3 to 4/3
1/2*2-6*4/3
slimplify 1/2*2 to 1
1-6*4/3
slimplify 6*4/3 to 24/3
1-24/3
slimplify 24/3 to 8
1-8
slimplify
-7
A and D is the answers that I would choose
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:
16 + 36 = 52 so the answer would be A) 4(4 + 9) because that equals 52 as well.
Answer:
The correct answer is A. The base of the rectangular prism must be 12 units because the height is 2 units, and 2 multiplied by 12 is 24, which is the total volume of the prism.