Question

Which expression are polynomial can be more than one answer

Answer 1

The first and third one

Explanation:

Answer 2

`(7y^(2) +9x)/(4)` and 6y²+5x

Explanation:

Polynomials are algebraic expressions involving one, or even more than one variables raised to any power summing each other. Generally speaking, in other words an one variable Polynomial is

`a_(0)+a_(1) x+a_(2) x^(2)...a_(n) x^(n)`

So a multivariate polynomial expression are
`(7y^(2) +9x)/(4)` and 6y²+ 5x.

Because in the other options:

We have a Radical of an Irrational number
`√(3) =3^{(1)/(3)}` times x (2nd option) what does not configure a polynomial.

And a Polynomial Quotient with a variable on the denominator, described by:

`P(x)=(Q(x))/(R(x)) \\ P(x)=q(x)*Q(x)+R(x)`

Like the last option:

`(7x^(2)+8)/(4x)`