Помогите 2 и 3 решить
2) 5x - x^2 + 3 = x*(2-x)
5x - x^2 + 3 = 2x - x^2
5x + 3 = 2x
3x = -3
x = -1.
3) x(4x+1) -7(x^2-2x) = 3x(8-x) +6
4x^2 + x - 7x^2 +14x = 24x - 3x^2 + 6
15x = 24x + 6
-9x = 6
