Question

How many different variables are in the expression 5g2−2h+9
?
GPT 3.5
There are two different variables in the expression: g and h.
banks
explain your reason
GPT 3.5
In the expression 5g^2 - 2h + 9, the variable g appears with an exponent of 2 and the variable h appears without an exponent. Since g and h are distinct variables, they are considered as two different variables in the expression. Therefore, there are two different variables in the expression.
banks
so what is one of the variables to use?

GPT 3.5
One of the variables you can choose to use in the expression is g. The other variable is h.