Clover999
Clover999 Clover999
  • 20-06-2016
  • Mathematics
contestada

Factorise: 2x² -7x -4

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toporc
toporc toporc
  • 20-06-2016
The terms in x must be 2x and x. The factors of -4 are either -4 and 1, -1 and 4, -2 and 2 or 2 and -2. Trying each of the combinations we get (2x + 1)(x - 4) as the solution.
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denn
denn denn
  • 21-06-2016

2x-7x-4x=0.875 the answer is 0.875 cause of the fact that seven and two are the ones with the varible


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