Write the Product in Standard Form $$( 5 + 9 i ) ( 5 - 4 i )$$

question 153

Multiple Choice

Write the product in standard form.
- $$( 5 + 9 i ) ( 5 - 4 i )$$

• A) \(- 11 + 65 i\)
• B) \(- 36 i ^ { 2 } + 25 i + 25\)
• C) \(61 + 25 \mathrm { i }\)
• D) \(61 - 25 \mathrm { i }\)

---

Definitions:

Outermost Shell

The last or furthest energy level of an atom where electrons can be found, significant in determining an element's chemical properties.

Atomic Mass

Average of atom mass units for all the isotopes of an atom.

Ionic Compound

A chemical compound composed of ions held together by ionic bonds, typically formed between metal and non-metal elements.

Calcium Chloride

A chemical compound used in various applications, including as a de-icing agent, in food preservation, and in laboratory settings to provide a source of calcium ions.