51问答网 > 若a b为实数，切b=a-2分之根号a的平方-4再加根号4-a的平方，再加51 求根号a+b的平方根

若a b为实数，切b=a-2分之根号a的平方-4再加根号4-a的平方，再加51 求根号a+b的平方根

2025-03-15 09:12:32
推荐回答（1个）
回答1：

b=√(a^2-4)/(a-2) +√(4-a^2) +51a^2-4>=0 4-a^2>=0 a^2-4=0 a=-2 (a-2不等于0)b=51√(a+b)=√49=7

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