Seudónimo Seudónimo
  • 25-05-2017
  • Mathematics
contestada

plz help................

plz help class=

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SPYSEYNOCHOS
SPYSEYNOCHOS SPYSEYNOCHOS
  • 25-05-2017
the answer is [tex] a^{2} +2a[/tex]
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Аноним Аноним
  • 25-05-2017
The answer would be the last choice
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Background Info:The standard enthalpy of formation (ΔH∘f) is the enthalpy change that occurs when exactly1 mol of a compound is formed from its constituent elem