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Sagot :

1) 322/506 (:2)
=161/253 (:23)
=7/11

2)3⁴/3⁻⁷
=3⁴×3⁷
=3¹¹
=177,147

3)√20=√2×10=√2×2×5=2√5

4)faux car 32:6=5,33..
Donc sa donne pas un nombre entier

5) (3¹²)²×3⁻⁵
=3²⁴/3⁵
=3¹⁹

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