问题标题:
√a(√a+√b)=3√b(√a+√b)求2a+3b+√ab分之a-b+√ab的值
问题描述:
√a(√a+√b)=3√b(√a+√b)求2a+3b+√ab分之a-b+√ab的值
李华俊回答:
√a(√a√b)=3√b(√a5√b)
=>a√ab=3√ab15b
=>a-2√ab-15b=0
=>(√a3√b)(√a-5√b)=0
=>a=25b(a>0,b>0=>√a3√b>0)
(2a3b√ab)/(a-b)
=>(50b3b5b)/24b
=>29/12
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