阅读下面的例题:解方程X2-∣X∣-2=0解:(1)当x≥0时,原方程化为X2-X-2=0,解得X1=2,X2=-1(不合题意,舍去).(2)当X﹤0时,原方程化为X2+X-2=0,解得X1=1(不合题意,舍去),X2=-2.∴原方程的根是X1=2,X2=-2.请参照例题解方程X2-∣X-1∣-1=0.
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