Answer :
The polynomial is
[tex] {4x}^{2} - 3x + 7[/tex]
- Here all the exponents of x are whole numbers, i.e, 2 and 1 are whole numbers.
- So, this polynomial is a polynomial in one variable.
- Its variable is x.
So, the given polynomial is a polynomial in one variable.
Hope you could get an idea from here.
Doubt clarification - use comment section.