ka tolong ya no 3 sama 4 aja sekalian caranya, makasih

3. 3(x^2 - 2) = x(x-1)
3x^2 - 6 = x^2 - x
3x^2 - x^2 -x -6 = 0
2x^2 - x - 6 = 0
(2x + 3)(x - 2) = 0
2x = -3 atau x = 2
jadi x = -3/2 atau x = 2

4. x + 4/x = (3x + 4)/x
x (x + 4/x) = x (3x + 4)/x
x^2 + 4 = 3x + 4
x^2 - 3x +4 - 4 = 0
x^2 - 3x = 0
x(x - 3) = 0
x = 0 atau x = 3