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標題:
Maths F.2!!!
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發問:
Simplify the following and rationalize the donominator of the answer. √18 ×√14×√12 ----------------------- √60 更新: √ 是平方根的符號!!! 更新 2: Show clear step!!!
最佳解答:
√18 ×√14×√12 ----------------------- √60 = [√(2x3x3) x √ (2x7) x √ 12] / [√ (12x5)] = [ (3√ 2) x (√ 2) x (√ 7) ] / (√ 5) = (3x2x√ 7) / (√ 5) 6√ 7 = ---------- √ 5 2008-12-27 17:30:16 補充： 漏左幾步.... = (6√ 7) / (√ 5) = (6x√ 7x √ 5) / (√ 5x√ 5) = (6√ 35) / 5
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