а) -8(x+6)=0x+6=0x=-6б) -y(y-3)=0y(y-3)=0y=0y-3=0y=0y=3y₁=0; y₂=3
в) 3(z+2)(z-4)=0(z+2)(z-4)=0z+2=0z-4=0z=-2z=4z₁=-2; z₂=4
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а) -8(x+6)=0
x+6=0
x=-6
б) -y(y-3)=0
y(y-3)=0
y=0
y-3=0
y=0
y=3
y₁=0; y₂=3
в) 3(z+2)(z-4)=0
(z+2)(z-4)=0
z+2=0
z-4=0
z=-2
z=4
z₁=-2; z₂=4