Question
Which of the following expression are polynomials?
$1-\sqrt{5\text{x}}$
$1-\sqrt{5\text{x}}$
✓
Answer
Not Polynomial, because the exponent of the variable of $1-\sqrt{5\text{x}}$ or $1-\sqrt{5\text{x}}^{\frac{1}{2}}$ is $\frac{1}{2}$ which is not a whole number.
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