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  • 06-10-2016
  • Mathematics
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Use the quadratic formula to solve 3x2 + 5x + 2 = 0.

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  • 06-10-2016
for
ax^2+bx+c=0

x=[tex] \frac{-b+/- \sqrt{b^2-4ac} }{2a} [/tex]
a=3
b=5
c=2

x=[tex] \frac{-5+/- \sqrt{5^2-4(1)(2)} }{2(3)} [/tex]
x=[tex] \frac{-5+/- \sqrt{25-8} }{6} [/tex]
x=[tex] \frac{-5+/- \sqrt{17} }{6} [/tex]
x=[tex] \frac{-5+ \sqrt{17} }{6} [/tex] and [tex] \frac{-5- \sqrt{17} }{6} [/tex]
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