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  • 24-01-2018
  • Mathematics
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Could someone help me with number 48?? I would really appreciate it!!

Could someone help me with number 48 I would really appreciate it class=
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jackyang0325p2z5fu
jackyang0325p2z5fu jackyang0325p2z5fu
  • 24-01-2018
3x^2-x-21=12- -2-21=14-21=7
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