Question

Which of the following is the example of Trinomial?

(a) 9x^3+ 5x^2+7x+2

(b) 9

(c) 7x-2

(d) 5x^2+2x-2

The question was posed to me by my college professor while I was bunking the class.

Question is from Polynomials in One Variable topic in section Polynomials of Mathematics – Class 9

Answer 1

The correct answer is (d) 5x^2+2x-2

The best I can explain: Polynomials only having three terms are called Trinomials.

Hence to find trinomial polynomial, we have to find polynomial which has three terms. We can see that 5x^2+2x-2 has three terms namely 5x^2, 2x and 2. Hence it is trinomial.

Similarly, polynomials only having one term are called Monomials and polynomials only having two terms are called Binomials.