Mathematics, 26.03.2020 02:57 ausemkattom3034

Which expressions are in their simplest form? Check all that apply.
One-third + x Superscript 7
x Superscript negative 9 Baseline minus StartFraction 1 Over y EndFraction
StartFraction 1 Over x cubed EndFraction minus StartFraction 1 Over y Superscript 4 EndFraction
x cubed + StartFraction 1 Over y EndFraction minus t Superscript 6
x Superscript negative 5 Baseline minus y Superscript negative 4

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Which expressions are in their simplest form? Check all that apply.
One-third + x Superscript...