已知ab分别是根号7的整数部分和小数部分,求a⼀b的值

2025-05-14 14:38:59
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回答(1):

2<√7<3
a=2,b=√7-2
a/b
=a÷b
=2÷(√7-2)
=2(√7+2)÷[(√7+2)(√7-2)]
=2(√7+2)÷3
=3分之[2(√7+2)]