Perform the Desired Operation $- 3 i ( - 4 + 9 i )$

question 7

Multiple Choice

Perform the desired operation. Write the answer in the form a + bi.
- $- 3 i ( - 4 + 9 i )$

• A) \(27 + 12 \mathrm { i }\)
• B) \(12 i - 27 i ^ { 2 }\)
• C) \(- 27 + 12 \mathrm { i }\)
• D) \(12 i + 27 i ^ { 2 }\)

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Definitions:

Itching Sensation

An uncomfortable sensation on the skin that provokes the desire to scratch the affected area.

Bottom-Up Processing

is an approach to information processing based on the input from the environment to form perception, without preconceived cognitive concepts.

Top-Down Processing

A cognitive process that uses context or general knowledge to understand and interpret information.

Touch

One of the five senses, involving the perception of physical pressure or deformation against the skin, crucial for human emotional connection and environmental interaction.