1.根號三分之二除以根號五 2.根號六除以根號二十四 3.負根號四除以根號二分之一 4.根號十五分之二除以根號八分之三 5.根號一百八十之二 6.根號二的二平方乘三的三平方乘五的二平方分之一 (化為最簡根式)?

2015-11-03 1:46 pm

回答 (1)

2015-11-03 1:54 pm
1. sqrt(2/3) / sqrt(5) = sqrt(2/15) around 0.3651483716701107
2. sqrt(6) / sqrt(24) = sqrt(6) / sqrt(6 * (2 * 2)) = sqrt(6) / (sqrt(6) * 2) = 1 / 2 = 0.5
3. -sqrt(4) /sqrt(1/2) = -sqrt(4 / 0.5) = - sqrt(8) around -2.82842712474619
4. sqrt (2/15) / sqrt(3/8) = sqrt((2/15) / (3/8)) = sqrt((2/15) * (8/3)) = sqrt(16/45) = 4/sqrt(45) = 4/(3 * sqrt(5)) around 0.5962847939999439
5. sqrt(182) = sqrt(2 * 91) = sqrt(2 * 7 * 13) = sqrt(2) * sqrt(7) * sqrt(13) around 13.49073756323204
6. what is 二平方 三平方


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