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What are the answers to the attachment and how did you get that answer

What are the answers to the attachment and how did you get that answer-example-1

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SOLUTION

A Polynomials are sums of terms of the form


k.x^n

where k is any number and n is a positive integer. Hence n must be a positive whole number


\begin{gathered} x^2+1 \\ is\text{ a polynomial } \\ \text{This is because the exponent or power (2) is a positive whole number } \end{gathered}
\begin{gathered} x^{(1)/(2)}+1 \\ is\text{ not a polynomial } \\ \text{This is because polynomial cannot contain a fractional exponent or } \\ \text{power. }(1)/(2)\text{ is a fraction } \\ \text{hence }x^{(1)/(2)}+1\text{ is not a polynomial } \end{gathered}
\begin{gathered} (x)/(3) \\ is\text{ a polynomial } \\ \text{This is because }x\text{ can also be written as }x^1 \\ so,\text{ the power or exponent (1) is a whole number. } \\ \text{Hence }(x)/(3)\text{ is a polynomial } \end{gathered}

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