Represent the following phrase as an algebraic expression, where "a number" is the letter x. You do not need to simplify.

5 plus the square of a number.
5 plus the square of a number

1 answer

The phrase "5 plus the square of a number" can be represented as the algebraic expression:

\[ 5 + x^2 \]

where \( x \) represents "a number."