Question

Plz hlp me... 1. Which of the following expressions is polynomial?

$1. \: x5 - 2x3 + x + 7$
$2. \: y3 - \sqrt{3y}$
$3. \: \sqrt[5]{z} - 6$
$4. \: x - \frac{1}{x}$
$5. \: x108 - 1$
$6. \: \sqrt[3]{x} - 27$
$7. \: x - 2 + 2x - 1 + 3$
Plzzzz hlp kro boht urgent hai....

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Answer 1

Answer:

1,2,5,4 it is the polynomials