23 the answer is Bbbbbbbbbbbbbbbbbbbb
Answer: Probability of getting red both times is 
Step-by-step explanation:
Since we have given that
A spinner is half red and half blue.
Probability of getting red is given by

Probability of getting blue is given by

Since he spins the spinner twice.
Probability that you will get red both times is given by

Hence, Probability of getting red both times is 
Answer: 25
Step-by-step explanation:
Finding the product of complex numbers is not different to finding the product of real numbers
(-3i+4) * (3i+4) = -9i^2 + 12i - 12i + 16 = 25