Answer:
Options A and E.
Step-by-step explanation:
Trinomial function is a function which has three terms for example
ax² + bx + c = 0
In the given options we find
Option A.[tex]\frac{5}{7}y^{3}+5y^{2}+y[/tex]
It has three terms so given expression is a trinomial.
Option E. [tex]x^{4}+x^{2}+1[/tex]
This expression has three terms so it's a trinomial.
Rest all options are not the examples of trinomial.
Options A and E are the correct options.
