Bikvadratic equation - problems

  1. Right triangle eq2
    rt_triangle_1 Find the lengths of the sides and the angles in the right triangle. Given area S = 210 and perimeter o = 70.
  2. Biquadratic
    bikvadraticka By introducing a new variable solve biquadratic equation: ?
  3. Diamond diagonals
    kosostvorec Calculate the diamonds' diagonals lengths if the diamond area is 156 cm square and the side length is 13 cm.

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