Please check my answer:
Which expression is not a polynomial?
Ax^3 + 4x – 3
Bx – 5
C1/3x
D4x^–1 + 5x – 2
My answer: C. 1/3x
Which expression is not a polynomial?
Ax^3 + 4x – 3
Bx – 5
C1/3x
D4x^–1 + 5x – 2