I think is this hopefully this helps
we are given

Firstly , we can distribute

now, we can combine like terms


now, we can solve for x
and we get
...........Answer
Answer:
36
Step-by-step explanation:
you would just to 39^2-15^2 which is 1296 and the square root of that is 36 so 36 would be the answer
Answer:
10
Step-by-step explanation:
they each go by ten
The answer is A..........