Answer:
Step-by-step explanation:
Rewrite this as

Knowing that i-squared = -1:

Both i-squared and 100 are perfect squares, so this simplifies to
±10i
It’s ok I will try to figure out an answer
Answer:
Step-by-step explanation:

16. It is the only even number in the group. I know this because:
25/2 = 12.5
16/2 = 8
49/2 = 24.5
63/2 = 31.5
81/2 = 40.5
:) Hope I helped