Which of the following polynomials is a trinomial? 3x3 4x - 1 x4 - 7x + 9 x3 + 2x2 - 5x + 3

x4 - 7x + 9

Step-by-step explanation:

Hi, a trinomial is a polynomial with three terms.

Analyzing the options given:

a-3x3 = 1 term  

b-4x - 1 = 2 terms  

c-x4 - 7x + 9 = 3 terms  

d-x3 + 2x2 - 5x + 3 = 4 terms

The correct option is polynomial c.

Since option c has 3 terms, it is a trinomial.

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