Question

5. Identify polynomials from the given algebraic expressions(with explanation) :
(i) 4/9x² - 4/9x² + 4
(ii) 2/x + 3/x² - 4x² + 3x + 2
(iii) 3+ 4a²b + 8b³
(iv) x² - 1/x² + 2​

Answer 1

Answer:

Only (iii) is polynomial cause the powers of x are positive.

(i) x has a power of -2 in 4/9x^2 and -4/9x^2 it cant be a polynomial

ii x has power of -1, -2 in 2/x and 3/x respectively it cant be polynomial

iv x has power of -2 in -1/x^2 so it cant be polynomial