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x=0 x =-3 x1=0,x2 =3 x1=0,x2 = -3
(2x-2)(3x-4)=0,∴2-2x=0或3x-4=0 (x+3)(x-1)=1,∴x+3=0或x-1=1 (x-2)(x-3)=2×3,∴x-2=2或x-3=3 x(x+2)=0,∴x+2=0
x=2 x=-3 x1=-2,x2=3 x1=2,x2=-3
x²+4x=10 3x²+8x-3=0 x²-2x+3=0 (x-2)(x-3)=12
(x+2)(x+3) (x-2)(x-3) (x-2)(x+3) (x+2)(x-3)
x=0 x=-3 x1=0,x2=3 x1=0,x2=-3
(x-2)(x-3) (x-2)(x+3) (x+2)(x-3) (x+2)(x+3)
x=2 x=-3 x1=-2,x2=3 x1=2,x2=-3
x2+x+2=0 x2﹣x+2=0 x2﹣x﹣1=0 x2﹣x+3=0