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1. I. P(x)=x-2
II. Q(x) = 2√x
III. R(x)=x+ - X
IV. T(x)=- x+7 x+2
V. K(x)=x²+6x+1
ifadelerinden kaç tanesi polinomdur? A) 1 B) 3 C) 4 D) 5 E) 2​