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algebra

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1. x^2+6x-4=0
2. greater common factor -18a^3,3a^5
3. Solve 10x^4-11x^3+3=0

  • algebra -

    1.
    x^2 + 6x + .... = 4+ ...
    x^2 + 6x + 9 = 4 + 9
    (x+3)^2 = 13
    x+3 =±√13
    x = -3 ± √13

    2. much too easy for the level of the other questions

    3. Wolfram shows 4 complex roots
    http://www.wolframalpha.com/input/?i=10x%5E4-11x%5E3%2B3%3D0
    Are you sure you typed it correctly?
    Compared to the other two easy questions, this is in another league.

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