Answer:
monomial of degree 2
binomial of degree 1
trinomial of degree 3
Explanation:
9xy
1 term: monomial
add the exponents of each variable: 1 + 1 = 2
Answer: monomial of degree 2
x - 3y + 7x
Combine like terms: 8x - 3y
2 terms: binomial
Each term has exponent 1 on its variable. Each term is of degree 1.
Answer: binomial of degree 1
19ab + 8abc - 27a
3 terms: trinomial
Look at the exponents of the variables of each term.
19ab: 1 + 1 = 2: degree 2
8abc: 1 + 1 + 1 = 3: degree 3
-27a: degree 1
Degree of polynomial = degree of highest term
Answer: trinomial of degree 3