Four polynomials are shown below:

A. 3 - 7x5 + x2
B. 5x3 + 5 - 3x
C. 3x + 2x3 - x2 + 6 + 2x
D. 3x3 - 5 + 2x5 + x + 2x2

Which of the above polynomials is a 5th degree trinomial?

Polynomial A

Polynomial B

Polynomial C

Polynomial D

Question

Four polynomials are shown below:

A. 3 - 7x5 + x2
B. 5x3 + 5 - 3x
C. 3x + 2x3 - x2 + 6 + 2x
D. 3x3 - 5 + 2x5 + x + 2x2

Which of the above polynomials is a 5th degree trinomial?

 Polynomial A

 Polynomial B

 Polynomial C

 Polynomial D

anonymous · Answer

This is D correct??

anonymous · Answer

@jim_thompson5910

jim_thompson5910 · Answer

it's also A because that polynomial has the term -7x^5

which has the largest exponent for that polynomial

jim_thompson5910 · Answer

oh wait

jim_thompson5910 · Answer

it's not choice D because choice D isn't a trinomial

jim_thompson5910 · Answer

remember a trinomial has 3 terms

anonymous · Answer

So it would be B because there are 3 terms and the degrees add up to 5?

jim_thompson5910 · Answer

5x^3 + 5 - 3x has three terms

it's a trinomial

but it is NOT of degree 5

jim_thompson5910 · Answer

5x^3 + 5 - 3x is of degree 3

largest exponent = degree (for single variable polynomials)

anonymous · Answer

Then A.?

jim_thompson5910 · Answer

yep

anonymous · Answer

Thanks