Classify the expression 21a – 3 as a monomial, binomial, trinomial or polynomial.

Question

dumbcow · Answer

mono = 1 term
bi = 2 terms
tri = 3 terms
poly = greater than 3 terms

anonymous · Answer

i think it is binomial

anonymous · Answer

A. 9xy
B. 3x2 + 7x + 2
C. 7x + 3
D. y- 2
Correct Answer: A
Solution: 
Step 1: A monomial is an algebraic expression with only one term.
Step 2: Here, 3x2 + 7x + 2 is not a monomial as there are three terms in the expression. [3x2, 7x, and 3 are the three terms.]
Step 3: 7x + 3 is not a monomial as there are two terms in the expression. [7x and 3 are the two terms.]
Step 4: y- 2 is not a monomial as it is having a negative exponent.
Step 5: But, 9xy is a monomial as it is having only one term in the expression. [9xy is the only one term.]