1) x(x+5) = 104x^2 + 5x - 104 = 0(x + 13)(x - 8) = 0x = 8
2) (x-5)/x = (x-1) + 4/x(x-5)/x = (x^2 - x + 4)/xx - 5 = x^2 - x + 4x^2 - 2x - 1x = 1
3) x - 2/x = 1/2x^2 - 2 = x/22x^2 - 4 = x2x^2 - x - 4 = 0(2x + 1)(x - 4) = 0x = 4
1) x(x+5) = 104
x^2 + 5x - 104 = 0
(x + 13)(x - 8) = 0
x = 8
2) (x-5)/x = (x-1) + 4/x
(x-5)/x = (x^2 - x + 4)/x
x - 5 = x^2 - x + 4
x^2 - 2x - 1
x = 1
3) x - 2/x = 1/2
x^2 - 2 = x/2
2x^2 - 4 = x
2x^2 - x - 4 = 0
(2x + 1)(x - 4) = 0
x = 4