Multiply Assume That All Variables Represent Natural Numbers $\left( x ^ { a } + 7 \right) \left( x ^ { 2 a } + 3 \right)$

question 39

Multiple Choice

Multiply. Assume that all variables represent natural numbers.
- $\left( x ^ { a } + 7 \right) \left( x ^ { 2 a } + 3 \right)$

• A) \(x ^ { 3 a } + 10 x ^ { a } + 21\)
• B) \(x ^ { 3 a } + 10 x ^ { 2 a } + 21\)
• C) \(x ^ { 3 a } + 7 x ^ { 2 a } + 3 x ^ { a } + 21\)
• D) \(x ^ { 2 a ^ { 2 } } + 7 x ^ { 2 a } + 3 x ^ { a } + 21\)

---

Definitions:

Fast Mapping

A process of quickly determining a word’s meaning, which facilitates children’s vocabulary development.

Word Learning

the process by which individuals, especially infants and children, acquire the ability to understand, speak, and use words as part of language development.

Concrete Memory Aids

Physical objects or tools used to assist in the recollection of memories or information, such as flashcards or mnemonic devices.

Labeling Strategies

Techniques or methods used in identifying and classifying items or individuals into categories based on specific criteria.