Question

How many variable terms are in the expression 3x^3y + 5x^2 + y + 9? (Input a numeric value only.)

Answer 1

"variables" are generalized numbers, often represented with letters.
so, how many letters do you see in the mathematical expression?

Answer 2

That's incorrect.
for example:
\[x^2 - 3x + 5\]
is a "univariable" expression, meaning that it only has one variable, the variable "x" to be specific.

Answer 3

oh I feel dumb now so 2