10. Which one of the following is a polynomial? a) 2x^(1/2) -1
b) x-1/x+1
c) x²+ 3x^(3/2) / x^(1/2)
d) (x² / 2) - (2 / x² )
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the correct answer is 5 6 and 7

step-by-step explanation:

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combine all like terms then its just a 2 step equation