解x:ax²-2(a+1)x+4=0
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解x:ax²-2(a+1)x+4=0
解x:ax²-2(a+1)x+4=0
解x:ax²-2(a+1)x+4=0
(ax-2)(x-2)=0
ax^2-(2a+2)x+4=0;
(ax-2)(x-2)=0;
之后可以愉快解方程啦
2╱a或2
2