In a2x2+ax, if 'a' is constant and 'x' is a variable, this expression would become a polynomial in ___ variable(s). (Write in words)

In a2x2+ax, if 'a' is constant and 'x' is a variable, this expression

1.	In a2x2+ax, if 'a' is constant and 'x' is a variable, this expression would become a polynomial in ___ variable(s). (Write in words)
Answer» In $a^{2} x^{2} + a x$ , if 'a' is constant and 'x' is a variable, this expression would become a polynomial in ___ variable(s). (Write in words)