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17 January, 14:09

Which equation is quadratic in form?

6 (x + 2) 2 + 8x + 2 + 1 = 0

6x4 + 7x2 - 3 = 0

5x6 + x4 + 12 = 0

x9 + x3 - 10 = 0

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Answers (1)
  1. 17 January, 17:16
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    Quadratic is

    ax²+bx+c=0

    first one the constants aren't added together

    2nd one has power greater than 2

    all of them have powers greater than 2

    we can rewrite one of them to be quadratic

    for the 2nd one

    if we say that x²=u then we can rewrite it s

    6u²+7u²-3=0

    that is quadratic in form

    I would say 2nd option
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