Find the Product and Write the Result in Standard Form $5 \mathrm { i } ( - 9 \mathrm { i } + 2 )$

question 311

Multiple Choice

Find the product and write the result in standard form.
- $5 \mathrm { i } ( - 9 \mathrm { i } + 2 )$

• A) \(45 + 10 \mathrm { i }\)
• B) \(- 45 + 10 \mathrm { i }\)
• C) \(10 \mathrm { i } - 45 \mathrm { i } ^ { 2 }\)
• D) \(10 \mathrm { i } + 45 \mathrm { i } ^ { 2 }\)

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Definitions:

Radial Symmetry

Having parts arranged around a central axis, like the spokes of a wheel.

Nerve Net

Of cnidarians and echinoderms, a mesh of interacting neurons with no central control organ.

Neurons

Nerve cells that are the fundamental units of the brain and nervous system, responsible for receiving sensory input from the external world, sending motor commands to our muscles, and transforming and relaying electrical signals at every step in between.

Motor Activity

Bodily movements produced by skeletal muscles that result in energy expenditure, encompassing both deliberate exercise and routine physical activities.