D I did this question a while back
Your problem is too spaced out too understand! Next time make sure he spacing is more understandable and readable! sorry
-4r-24=-63
-4r=-63+24
4r=39
r=9, 75
:)
It’s the 3rd answer lol,good luck
Answer:
Given : Expression -
To find : How would the sum of cubes formula be used to factor given expression? Explain the process. Do not write the factorization.
Solution :
The formula of sum of cubes is,

First we convert the given expression in 

Apply exponent rule : 

Rewrite 
Therefore,
could be written as 
On comparison with the formula,
a=xy , b=7
