2b+3 = 5+b
b = 2
最简二次根式根号(2b+3) 根号(5+b)正好可以合并 则b=
最简二次根式根号(2b+3) 根号(5+b)正好可以合并 则b=
数学人气:932 ℃时间:2020-02-03 23:52:21
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