数学题,帮帮忙
2倍根号下3乘以3次根号下1.5乘以6次根号下12 要过程的
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同一成“六次根号”: 看图(“点”出来看,清楚)
2*{3^(1/2)}*{1.5^(1/3)}*12^(1/6) =2*{3^(1/6)}*{3^(1/3)}*{1.5^(1/3)}*12^(1/6) =2*(3*12)^(1/6)}*(3*1.5)^(1/3) =2*{36^(1/6)}*(9/2)^(1/3) =2*{6^(1/3)}*(9/2)^(1/3) =2*(6*9/2)^(1/3) =2*{27^(1/3)} =2*3 =6
问:初三数学题根号1又3分之2除以根号2又3分之2等于多少 根号12除以(根号8乘以根号5)等于多少 我也觉得简单 但做不对阿
答:√(5/3)/√(8/3)=√5/√8=√40/8=2√10/8=√10/4. √12/(√8√5)=√12/√40=2√3/2√10=√3/√10=√30/1...详情>>
答:详情>>