Question

Which expressions are polynomials
A) 20x^2
B)20x^2/y
C)20x^2+y^1/2

Answer 1

The answers are : 20x^2 and 20x^2 + y^1/2

I just took the test I promise those are the correct answers.

Answer 2

The answer is the option A: A) 20x^2

The explanation is shown below:

1. The polynomials can't have:

- Fractional exponents.
- Variables in the denominator.

2. As you can see, the option B) 20x^2/y has the variable "y" in the denominator, Therefore, it is not a polynomial.

3. The option C) 20x^2+y^1/2 has a fractional exponent, so it is not a polynomial.