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  1. J

    Is these algebraic expression correct

    1.(x - 3)2 = 4 x2 - 6x + 5 = 0 (x - 1)(x - 5) = 0 x = -1, -5 (is this correct) 2. 2x + 4 / x +1 = x - 8 / 2x - 1 (2x + 4)(2x - 1) = (x - 8)(x + 1 4x2 - 2x + 8x - 4 = x2 - 7x -8 4x2 - 6x - 4 = x2 - 7x - 8 (where do i go from here) 3. (x / 3) - (y / 2) = -1 (y / 2) = -4 - 3x 6x + y...
  2. J

    Alpha particle

    well if Th232 decays by alpha emission it loses a He atom thus Th232 = Ra228 + He4 hope this helps
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