解方程X2- (m2+m-2) x +m3-2m=0

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解方程X2- (m2+m-2) x +m3-2m=0

X2- (m2+m-2) x +m3-2m=0
x -(m2-2)
x -m
[x-(m-2)][x-m]=0
x1=m-2
x2=m

X²- (m²+m-2) x +m³-2m
=X²- (m²-2+m) x +m(m²-2)
=[x-(m²-2)](x-m)=0
x1=m²-2
x2=m

[x-(m2-2)][x-m]=0
x1=m2-2
x2=m