frances8049 frances8049
  • 02-02-2015
  • Mathematics
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If x = –1 and y = 2, what is the value of the expression 2x3 – 3xy ?

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naǫ
naǫ naǫ
  • 02-02-2015
[tex]x=-1, \ y=2 \\ \\ 2x^3-3xy=2 \times (-1)^3-3 \times (-1) \times 2=2 \times (-1) +6=-2+6=4[/tex]
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