Which polynomial is a quintic trinomial?
a.)x^3+2x^2−8x+16
b.)x² + 4
c.)−x4−5x2+1
d.)3x^5+7x²−9x^4

Option d is correct.

Step-by-step explanation:

Degree: Highest degree in the polynomial

Trinomial: A polynomial or equation that has 3 number of terms.

Quintic means a polynomial with degree 5.

a.

This is a polynomial of degree 3 with 4 number of terms.

b.

⇒2nd degree polynomial with 2 terms

c.

⇒4th degree polynomial with 3 terms.

d.

⇒5th degree polynomial with number of 3 terms.

Therefore, a polynomial which is a quintic trinomial is,