помогите решить уравнение
x(3x-9)=0，
(x-2)(z+1)=0，
x²-5x+4=0，
x²-5x+6=0，
7x²+8x+1=0
x(3x-9)=0，
(x-2)(z+1)=0，
x²-5x+4=0，
x²-5x+6=0，
7x²+8x+1=0
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Answers & Comments
x=0,3x-9=0
3x=9
x=3
(X-2)(z+1)=0
X-2=0,z+1=0
X=2,z=-1