Question

Which of the following is/are not a Polynomial? (a) x + (b) 2x-318+1 6) r-3.6+1 (1) 2x2 – 5x

Solution (a, b, d) (a) x2 + 1 = x2 + x- is not a polynomial since the exponent of variable in 2nd term is negative (6) 2x2 – 37x +1 = 2x2 – 3x2 +1 is not a polynomial, since the exponent of variable in 2nd term is a rational number. (c) x2 – 3x + 1 is a polynomial. 2x2 - 5x is also not a polynomial, since the exponents of variable in 1st term is a rational number Hence, (a), (b) and (d) is not a polynomial.