3)10-x=3 1) x^{2} -6x+9=1
-x=3-10 x^{2}-6x+9-1=0
-x=-7 x^{2}-2x-4x+9-1=0
x=7 x^{2}-2x-4x+8=0
x ×(x-2)-4x+8=0
x(x-2)-4(x-2)=0
(x-2)×(x-4)=0
x-2=0
x-4=0
x=2
x1=2
x2=4
3)10-x=3 1) x^{2} -6x+9=1
-x=3-10 x^{2}-6x+9-1=0
-x=-7 x^{2}-2x-4x+9-1=0
x=7 x^{2}-2x-4x+8=0
x ×(x-2)-4x+8=0
x(x-2)-4(x-2)=0
(x-2)×(x-4)=0
x-2=0
x-4=0
x=2
x-4=0
x1=2
x2=4