Answer:
C) cannot be simplified
<u>Explanation</u>
We want to simplify the radicals:
![\sqrt[3]{7} - \sqrt[4]{7}](https://tex.z-dn.net/?f=%20%5Csqrt%5B3%5D%7B7%7D%20%20-%20%20%5Csqrt%5B4%5D%7B7%7D%20)
We can rewrite this as exponents:

Since the base are the same but are subtracting, we do not have any rule of indices for subtracting unlike indices .
Therefore the expression cannot be simplified further.
Answer:
i don't knpw good luck though
Step-by-step explanation:
Answer:
4
Step-by-step explanation:
Substitute: 
Cross out the common factor: 
Calculate the product or quotient: 
Calculate the product or quotient: 
Calculate the sum or difference: 
Cross out the common factor: 
Answer: 