Answer:
what expressions?
Step-by-step explanation:
The main rules that we use here are :
i)

for nonnegative values a and b.
ii)

.
Thus, first 'decompose' the numbers in the radicals into prime factors:

.
By rule (i) we write:

.
We can collect these terms as follows:

, and by rule (ii) we have:

Answer:

.
Fill in the given information then calculate the missing parts. See attached picture
1.V = 0.45cm^3
2.V = 0.06cm^3
3.V = 0.39cm^3
4.D = 7.77g/cm^3