Question

Expression is polynomial if the index of variable Is

Answer 1

Answer:

Constant Number.

Step-by-step explanation:

The algebraic expression in one variable is a polynomial if the index of variable of each term is a constant number.

Example:

The expression:

$x {}^{y } - 4x + 7$

is not polynomial because the variable 'x' has index 'y' which is another variable.

BUT

$x ^{2} − 4x + 7.$

is a polynomial because the variable 'x' has indices '2' and '1'. And both 2 and 1 are constant numbers.