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Which of the following expressions are p...

Which of the following expressions are polynomias ? Which are not? Give reasons.
(i)` 4x ^(2) + 5x -2`
(ii) `y ^(2) -8`
(iii)5
(iv) `2x ^(2) + (3)/(x) -5`
(v) `sqrt3x ^(2) + 5y`
(vi` 1/x + 1 (x ne 0) `
(vii)` sqrtx`
(viii) 3 xyz

Answer

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