randun randun
  • 01-04-2017
  • Mathematics
contestada

what value of c makes 3x^2+24x+c contain a perfect square trinomial

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Аноним Аноним
  • 13-04-2017
One way to determine the value of c is to do completing the square. We do as follows:

3x^2+24x+c = 0
3x^2+24x = -c
3 (x^2 + 8x ) = -c
3 (x^2 + 8x + 16 ) = -c + 48

Since -c + 48 should be equal to zero thus,

-c + 48 = 0
c = 48
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