Question

Which of the following is not a polynomial?
(A) √3x² - 2√3x + 5
(B) 9x² – 4x + √2
(C) 3/2x³ + 6x² – 1/√2x – 8
(D) x + 3/x

Answer 1

Answer  (D) x + 3/x

An expression of the form p(x) = a₀ + a₁x + a₂x² + ….. + a_nxⁿ, where a_n ≠ 0, is called a polynomial in x of degree n.

Here, a₀, a₁, a₂, ……, a_n are real numbers and each power of x is a non-negative integer.

Hence, x + 3/x is not a polynomial.

3. The zeros of the polynomial x² - 2x - 3 are

(A) -3, 1

(B) -3, -1

(C) 3, -1

(D) 3, 1