amandaholtt amandaholtt

01-04-2015
Mathematics

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c *c-5c-24=0
Solve this quadratic equation by graphing.. But first how do you find the ordinates

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Panoyin Panoyin

02-04-2015

c² - 5c - 24 = 0
c = -(-5) +/- √((-5)² - 4(1)(-24))
   2(1)
c = 5 +/- √(25 + 96)
      2
c = 5 +/- √(121)
   2
c = 5 +/- 11
2
c = 5 + 11 c = 5 - 11
      2       2
c = 16 c = -6
   2 2
c = 8 c = -3

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