To take out terms outside the radical we need to divide the power of the term by the index of the radical; the quotient will be the power of the term outside the radical, and the remainder will be the power of the term inside the radical.
First, lets factor 8:
Now we can divide the power of the term, 3, by the index of the radical 2:
= 1 with a remainder of 1
Next, lets do the same for our second term
:
= 3 with a remainder of 1
Again, lets do the same for our third term
:
with no remainder, so this term will come out completely.
Finally, lets take our terms out of the radical:
We can conclude that the correct answer is the third one.
Answer:
B
Step-by-step explanation:
Answer:
6
Step-by-step explanation:
The height of the debris after t seconds is given by the following equation:
How many seconds will it take before the debris falls back to the ground?
This is t for which
So
or
or
The debris start at the ground(t = 0), go up, and come back to the ground at t = 6s.
So it takes 6 seconds for the debris to fall back to the ground.