若|a|+a=0,|ab|=ab,则化简根号b²-根号下a²+2ab+b²+根号a²=_____.
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若|a|+a=0,|ab|=ab,则化简根号b²-根号下a²+2ab+b²+根号a²=_____.
若|a|+a=0,|ab|=ab,则化简根号b²-根号下a²+2ab+b²+根号a²=_____.
若|a|+a=0,|ab|=ab,则化简根号b²-根号下a²+2ab+b²+根号a²=_____.
|a|+a=0
|a|=-a
|ab|=ab
|b|=-b
根号b²-根号下a²+2ab+b²+根号a²
=(-b)-[﹣(a+b)]-a
=-b+a+b-a
=0