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


Sagot :

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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