Answer:
[tex]\frac{7y^{2} +9x}{4}[/tex] and 6y²+5x
Step-by-step 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
[tex]a_{0}+a_{1} x+a_{2} x^{2}...a_{n} x^{n}[/tex]
So a multivariate polynomial expression are [tex]\frac{7y^{2} +9x}{4}[/tex] and 6y²+ 5x.
Because in the other options:
We have a Radical of an Irrational number[tex]\sqrt{3} =3^{\frac{1}{3}}[/tex] times x (2nd option) what does not configure a polynomial.
And a Polynomial Quotient with a variable on the denominator, described by:
[tex]P(x)=\frac{Q(x)}{R(x)} \\ P(x)=q(x)*Q(x)+R(x)[/tex]
Like the last option:
[tex]\frac{7x^{2}+8}{4x}[/tex]
