angelicaureste angelicaureste
  • 07-09-2017
  • Mathematics
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Add : 4d + 1 + d − 2d2 − 1

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ghanami
ghanami ghanami
  • 07-09-2017
hello : 
 4d + 1 + d − 2d2 − 1 = -2d² +5d
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