已知实数a,b满足√-a=b,化简|a|+2√(-b)^2-|3b-2a|=_____
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已知实数a,b满足√-a=b,化简|a|+2√(-b)^2-|3b-2a|=_____已知实数a,b满足√-a=b,化简|a|+2√(-b)^2-|3b-2a|=_____已知实数a,b满足√-a=b
已知实数a,b满足√-a=b,化简|a|+2√(-b)^2-|3b-2a|=_____
已知实数a,b满足√-a=b,化简|a|+2√(-b)^2-|3b-2a|=_____
已知实数a,b满足√-a=b,化简|a|+2√(-b)^2-|3b-2a|=_____
特殊值法:取a=-4,b=2,则
|a|+2√(-b)^2-|3b-2a|=4+4-14=-6猜测结果为a-b;
或者作一般分析
由b^2=-a>0,b>0,a
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