simplifier 1/3-√7
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Sorry but I don't know the answer but I will try it to find
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Depuis, le dénominateur = 3-√7, sa rationalisation du dénominateur:
1/3-√7 = 1/3-√7 × 3+√7/3+√7
=3+√7/9-7 [ (3-√7) (3+√7) = (3)² - (√7²) = 9-7 =2)
=3+√7/2
J'espère que cela aide:)
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