拿计算器一按就行了嘛- -根号867=29.44根号0.46254=0.68正根号2402=49.01负的=-49.01 负25分之8=0.32
√867=29.44 √0.46254=0.68-8/25=-0.32正负√2402=正负49.01
29.440.68-0.32正负49.01
