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若|2004-a|+(根号a-2005)=a 求a-2004的平方 1怎么分解因式
人气:486 ℃ 时间:2020-05-08 15:45:11
解答
2004-a|+√(a-2005)=a
因为(a-2005) >=0
所以a>=2005
所以式子转换为:
(a-2004)+√(a-2005)=a
a-2004+√(a-2005)=a
√(a-2005)=2004
a-2005=2004^2
a-2004^2=2005
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