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2014-10-22T22:32:26+03:00
2√2/3√3=(2√2·3√3)/(3√3)²=6/√6/3·3=2√6/3
5√2/2√3=rationalizam camai sus=10√6/4·3=5√6/6
7√2/6√3=rationalizam=42√6/36·3=7√6/18
4√2/2√3=rationalizam=8√6/4·3=4√6/6
⇒2√6/3+5√6/6-7√6/18-4√6/6=2√6/3+√6/6-7√6/18 aducem la acelasi numitor=
=(12√6+3√6-7√6)/18=8√6/18=4√6/9
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