Here is a step by step solution. Go over it carefully and try to see how it's done. Good luck.
Simplify the following:
4 i×2 i
Combine products of like terms.
4 i×2 i = 4 i^2×2:
4 i^2×2
Evaluate i^2.
i^2 = -1:
4×-1×2
Multiply 4 and -2 together.
4 (-2) = -8:
Answer: |
| -8
