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Write each of the operations below as al...

Write each of the operations below as algebraic expressions, find out which are polynomials and explain why.
i) Sum of a number and its reciprocal.
ii) Sum of a number and its square root.
iii) Product of the sum and difference of a number and its square root.

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i) If number is , then reciprocal is ` 1 x , x + 1 x ...
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