Question

Which of the following is/are not a polynomial?
i)u-u^2+√7
ii)-6m^2+√m+5
iii)y^5+√7y+3
iv)x^2+3/4x+20

Answer=❓​

Answer 1

Answer:

Step-by-step explanation:

Polynomial is an expression consisting of variables and real number coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables.

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(i). (- 1)u² + u + √7$u^{0}$ is a polynomial ;

(ii). - 6m² + $m^{1/2}$ + 5 is not a polynomial ;

(iii). $y^{5}$ + (√7)y + 3 is a polynomial (I assume that in original task "y" is not under the radical!! Because, in this case the expression will be not a polynomial. Make sure your copy is correct). ;

(iv) To avoid the double reading you have to use parentheses, my dear friend!! But, for now

Case (1): x² + (3/4)x + 20 = x² + $\frac{3}{4} x$ + 20 is a polynomial

Case (2): x² + 3/(4x) + 20 = x² + $\frac{3}{4}$ $x^{-1}$ + 20 is not a polynomial.