若實數(shù)x，y滿足|x-y|+（y-2）2=0，則xy的值為_．
若實數(shù)x，y滿足|x-y|+（y-2）2=0，則xy的值為______．
數(shù)學人氣：121 ℃時間：2020-10-01 21:14:29
優(yōu)質解答
依題意得：x-y=0，y-2=0，∴y=2，x=2．∴xy=4．
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