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Solve by factoring.
5[tex] x^{2} [/tex]-6x-8=0

Sagot :

Panoyinidn
5x² - 6x - 8 = 0
x = -(-6) +/- √((-6)² - 4(5)(-8))
                      2(5)
x = 6 +/- √(36 + 160)
                 10
x = 6 +/- √(196)
            10
x = 6 +/- 14
          10
x = 6 + 14          x = 6 - 14
         10                      10
x = 20                x = -8
      10                      10
x = 2                  x = -4/5
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