(x-1)²-m²<=0(x+m-1)(x-m-1)<=0零点是1-m和1+mm>0所以1-m<1+m所以1-m≤x≤1+m
移项x^2-2x+1<=m^2(x-1)^2<=m^2m>0所以 -m ≤ x-1≤m所以 1-m≤x≤1+m
x^2-2x+1≤m^2(x-1)^2≤m^2∵m>0∴-m ≤x-1≤m∴1-m≤x≤1+m
x^2-2x+1-m^2≤0(x-1)^2≤m^2-m≤x-1≤m1-m≤x≤1+m