Question

$answer \: \: \: it$
​

Answer 1

i)

given expression has only one variable ‘x’, hence this is a polynomial in one variable.

ii)

given expression has only one variable ‘y’, hence this is a polynomial in one variable.

iii)

variable, ‘t’ in this expression exponent of variable is not a whole number. [Exponent of a variable in a polynomial must be a whole number. Expression with exponent of a variable in fraction is not considered as a polynomial.]

iv)

exponent of the variable is negative integer, and not a whole number, hence it cannot be considered a polynomial

v)

given expression has three variables, i.e. x, y and t, so it is not a polynomial in one variable.

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