Answer :

To determine how many terms are included in the expression [tex]\(x^2 - 3x + 7\)[/tex], let's break the expression down and identify each term.

A term in an algebraic expression is a combination of constants and variables, separated by addition or subtraction operators.

Here is the expression again:
[tex]\[ x^2 - 3x + 7 \][/tex]

We can identify the individual terms as follows:
1. [tex]\( x^2 \)[/tex]
2. [tex]\( -3x \)[/tex]
3. [tex]\( +7 \)[/tex]

Each of these is a distinct term in the expression. Therefore, we can count them:
1. [tex]\( x^2 \)[/tex]
2. [tex]\( -3x \)[/tex]
3. [tex]\( +7 \)[/tex]

There are three terms in the expression.

So, the correct answer is:
A. 3