Answer:
Option (A) and Option (B)
Explanation:
Trinomial is a polynomial having three terms.
Option A
![(5)/(7)y^3+5y^2+y](https://img.qammunity.org/2021/formulas/mathematics/college/ga1gx0jf047bqebcs5tvr2x3xc7fxo9had.png)
Number of terms = 3
So it's a trinomial.
Option (B)
x⁴ + x² + 1
Number of terms = 3
It's a trinomial.
Option C
6x² + 0.5y²
Number of terms = 2
It's a binomial.
Option D
x² + 3
Number of terms = 2
It's a binomial.
Option E
x¹¹
Number of terms = 1
Monomial
Option F
8x
Monomial.
Therefore, Option (A) and Option (B) are the correct options.