|a+2|+(b-1)²=0
绝对值和平方都大于等于0
相加等于0,若有一个大于0,则另一个小于0,不成立.
所以两个都等于0
所以a+2=0,b-1=0
a=-2,b=1
a²+ab²=4-2=2
若绝对值a+2,+b^-2b+1=0求a^+ab^的值
若绝对值a+2,+b^-2b+1=0求a^+ab^的值
数学人气:318 ℃时间:2019-12-23 14:07:18
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