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anonymous

  • 5 years ago

can someone please help me solve 15x^4-14x^2+3=0

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  1. anonymous
    • 5 years ago
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    15x4-9x2-5x2 +3=0 3x2(5x2-3)-(5x2-3)=0

  2. anonymous
    • 5 years ago
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    (3x2-1)(5x2-3)=0

  3. anonymous
    • 5 years ago
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    (3x^2-1)(5x^2-3)=0 +-Sqrt[3/5] +-1/Sqrt[3]

  4. anonymous
    • 5 years ago
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    u r cute

  5. anonymous
    • 5 years ago
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    Thanks and how am i suppose to write that answer

  6. anonymous
    • 5 years ago
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    \[x \in\left\{\pm \sqrt{3/5}; \pm1/\sqrt{3} \right\}\]

  7. anonymous
    • 5 years ago
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    15x4-9x2-5x2 +3=0 3x2(5x2-3)-(5x2-3)=0 (3x2-1)(5x2-3)=0 3x2-1=0 , 5x2-3=0 x2=1/3, x2=3/4 x=+-1/sqrt3 , x=+- sqrt3 /2

  8. anonymous
    • 5 years ago
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    where r u from?

  9. anonymous
    • 5 years ago
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    sc

  10. anonymous
    • 5 years ago
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    sc?

  11. anonymous
    • 5 years ago
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    Scotland?

  12. anonymous
    • 5 years ago
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    and u are from

  13. anonymous
    • 5 years ago
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    south cakcalaki

  14. anonymous
    • 5 years ago
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    australia

  15. anonymous
    • 5 years ago
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    whoops :) Im from Czech republic :)

  16. anonymous
    • 5 years ago
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    what grade r u in?

  17. anonymous
    • 5 years ago
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    me or dollar?

  18. anonymous
    • 5 years ago
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    both

  19. anonymous
    • 5 years ago
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    I dont know your educational system. Im on hight school and im finishing it on 2012

  20. anonymous
    • 5 years ago
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    ankur u mean -1 sq root 3, and -3/2

  21. anonymous
    • 5 years ago
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    college

  22. anonymous
    • 5 years ago
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    x=1/sqrt3, +-1/sqrt3 , x= sqrt3 /2, - sqrt3 /2

  23. anonymous
    • 5 years ago
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    you have error there

  24. anonymous
    • 5 years ago
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    it is sqrt(3/5) not (3/4)

  25. anonymous
    • 5 years ago
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    serychj im confused on which answer to put

  26. anonymous
    • 5 years ago
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    mine is correct :) his have error in one line before end: 5x2-3=0 x2=3/4 -> error x^2=3/5

  27. anonymous
    • 5 years ago
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    sorry guys but all the answers were wrong after a couple of tries it generates the correct answer and it was -sq3/3,sq3/3,and -sq15/5,sq15/5 thanks anyway

  28. anonymous
    • 5 years ago
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    check this: http://www.wolframalpha.com/input/?i=15x^4-14x^2%2B3%3D0 your wrong

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