Question

Can anyone help me find the degree & number of terms on these polynomials below?!
9x2yz
18x2 + 5ab – 6y
8a – 5

My answers:
1. 4th degree, 1 term: monomial
2. 2nd degree, 3 terms: trinomial
3. 1st degree, 2 terms: binomial

in the first two polynomials, the 2's are exponents!

Answer 1

@whpalmer4

Answer 2

9x2yz does NOT have a degree of 2 (although I do see why you think it does)

Answer 3

9x^2yz is the same as 9x^2y^1z^1

and you find the degree by adding the exponents

Answer 4

@jim_thompson5910 ohhh! the variables always equal to one right?

Answer 5

not sure what you're asking

Answer 6

oh you mean y = y^1 ?

Answer 7

@jim_thompson5910 yeah.. so it'd be 3rd degree, trinomial?

Answer 8

you're getting closer, but no

Answer 9

the degree part anyway

Answer 10

so its not 2nd degree or 3rd degree.. lol oh I feel stupid! it's 2+1+1 and that equals to 4! okay so 4th degree, trinomial?

Answer 11

@jim_thompson5910

Answer 12

it's 4th degree, but it's not a trinomial

Answer 13

and it's ok, you're learning

Answer 14

its still a binomial right? @jim_thompson5910

Answer 15

are there any plus or minus signs between variables or coefficients?

Answer 16

in the expression 9x^2y^1z^1

Answer 17

no..

Answer 18

so it's all collectively one term

Answer 19

if you had something like 9x^2y^1+z^1, then there would be two terms

Answer 20

one term ---> it's a monomial

Answer 21

9x^2y^1z^1 is a 4th degree monomial

Answer 22

ohhh okay, I misunderstood what my notes said! thanks! are the others correct? :/ @jim_thompson5910

Answer 23

2 is completely correct

3 is completely correct

so both 2 and 3 are correct, nice work

Answer 24

thank you sooo much!! :) @jim_thompson5910

Answer 25

you're welcome