Question

which one is not a polynomial 4 x square + 2 x minus one​

Answer 1

Answer:

It is polynomial but it's root are not real....

Step-by-step explanation:

Answer 2

$\underline {\blue { Polynomial: }}$

An algebraic expression in which the variables involved have only non - negative Integral powers is called a polynomial.

$Here, Given \: expression : 4x^{2} + 2x - 1$

$\green { This \: expression \:is \:a \: polynomial }$

$Because , exponents \:of \: variable \: 'x' \\ have \: only \: non - negative \: integers \: i.e., \\2,1 \:and \: 0$

Therefore.,

$\green { Given \: expression \: is \: a \: polynomial}$

•••♪