Question

Four polynomials are shown below:

A. 4 − 7x5 + x2
B. 5x3 + 5 − 3x4
C. 3x + 2x4 − x2 + 6
D. 3x3 − 5 + 2x5 + x
Which of the above polynomials is a 4th degree trinomial?

answers-
Polynomial A

Polynomial B

Polynomial C

Polynomial D

Answer 1

The appropriate choice is
Polynomial B. -3x⁴ +5x³ +5

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C and D are not trinomials. (They have 4 terms, not 3.) A is 5th degree, not 4th.