Answer:
x = 7 is a solution.
x = -2 is an extraneous solution .
Answer:
20
Step-by-step explanation:
Answer:
cant see the entire picture sry
Step-by-step explanation:
Answer:
15
Step-by-step explanation:
The formula for factoring a sum of cubes is:

We have a=3f and b=5g here.
So a*b in this case is 3f*5g=15fg.
The ? is 15.