Which of the following is a trinomial with a constant term?

A. 4x^2 - 3 + x
B. 2x^2 - 7
C. -2 + 5x^3
D. 4x^5 + 2x - 2x^2

Question

Which of the following is a trinomial with a constant term?

 		A.	4x^2 - 3 + x
 		B.	2x^2 - 7
 		C.	-2 + 5x^3
 		D.	4x^5 + 2x - 2x^2

mathmate · Answer

Tri = 3  (c.f. triangle = polygon with "three" sides).

mathstudent55 · Answer

A constant term is a term consisting of only a number.

mathstudent55 · Answer

C. only has two terms. That cannot be a trinomial.
For this problem you need two things. You need a polynomial with 3 terms.
One of the three terms must be a plain number with no variables multiplying it.

mathstudent55 · Answer

Terms are separated by + signs.
How many trinomials do you see in the choices?

jacob902 · Answer

the only one that his that is d .

mathstudent55 · Answer

Notice that 4x^2 - 3 + x is really 4x^2 + (-3) + x, so you have three terms, 4x^2, -3, and x.

mathstudent55 · Answer

D. is a trinomial. You are correct, but it's not the only one.
A. is also a trinomial.

mathstudent55 · Answer

Yes. The answer is A. bec A is a trianomial, and one of its terms is a constant (a plain number).