yamssfolife yamssfolife
  • 18-03-2016
  • Mathematics
contestada

3x^2-7x+4=0 solve for x. Write both solutions separated by a comma

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Yexs
Yexs Yexs
  • 18-03-2016
[tex]Hi \\ \\ 3x\²-7x+4 ~~--\ \textgreater \ \boxed{\frac{-b\pm \sqrt{b\²-2ac} }{2a} } \\ a=3 \\ b=-7 \\ c=4 \\ \\ x= \frac{7\pm \sqrt{(-7)\²-2.3.4 } }{2.(3)} \\ \\ x= \frac{7\pm5}{6} \begin{cases}x_1= \frac{7+5}{6}=2 \\ \\ x_2= \frac{7-5}{6}= \frac{1}{3} \end{cases} \\ \\ \therefore~(2; \frac{1}{3}) \\ \\ \\ [/tex]
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Khushboo
Khushboo Khushboo
  • 18-03-2016
3x²-7x+4=0
3x²-3x-4x+4=0
3x(x-1)-4(x-1)
(x-1)(3x-4)
x=1 x=4/3
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