For the equation to work, you have to have the same number on both sides of the equal sign
so to find ?, you can do:
13 - 2 = 12 - ? Simplify
11 = 12 - ? Subtract 12 on both sides
-1 = - ? Multiply -1 on both sides
1 = ?
N=64.
32+64=100
64/8=8
sqrt (64+225)= sqrt (289) = positive and negative 17
Answer:

Step-by-step explanation:
the answer is the last one