Select the expressions that are polynomials. There may be more than one correct answer. 5x^(-1)+15x^(27)+6x^(28)+14x^(7) 14x^(16)+10x^(2)+15x^((3)/(8))+8x^(9) 8x^(17)+9x^(23)+4x^(4)+(10)/(x^(3))

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Select the expressions that are polynomials. There may be more than one correct answer. 5x^(-1)+15x^(27)+6x^(28)+14x^(7) 14x^(16)+10x^(2)+15x^((3)/(8))+8x^(9) 8x^(17)+9x^(23)+4x^(4)+(10)/(x^(3)) 3x^(11)+11x^(2.3)+11x^(10)+12x^(15) 11x^(22)+3x^(26)+x^(8)+9x^(18)