1) у(3у+7)=0 y₁ = 0 ; 3y + 7 = 0, y₂ = - 7/3y₂ = - 2 (1/3)2) -2х(х-4)=0 - 2x = 0, x₁ = 0x - 4 = 0, x₂ = 43) у(у+3)(у-6)=0 y = 0, y₁ = 0y + 3 = 0, y₂ = - 3y - 6 = 0, y₃ = 64) (1-х)(3х-2)(х+5)=0 1 - x = 0, x₁ = 13x - 2 = 0, 3x = 2, x₂ = 2/3x + 5 = 0, x₃ = - 55) z(2-z)(3-2z)=0z = 0, z₁ = 02 - z = 0, z₂ = 23 - 2z = 0, - 2z = - 3, z = 3/2z = 1,5