а. -4z-8x*9 + 16xz = -36 - 72x + 16xz
б. 6 x[3z - 2 + 20x^2 - 4x] = 18zx -12x + 120x^2 - 24x = 18zx - 36x + 120x^2
а. -4z-8x*9 + 16xz = -36 - 72x + 16xz
б. 6 x[3z - 2 + 20x^2 - 4x] = 18zx -12x + 120x^2 - 24x = 18zx - 36x + 120x^2