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Math

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Solve. 25x^4-15x^2+2=0

  • Math -

    Substitute u = x^2, and solve
    25u^2 -15u +2 = 0
    (5u -1)(5u-2) = 0
    u = 1/5 or 2/5
    x = sqrt u
    Take it from there.

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