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Sagot :

VINS

bonsoir

457 000 = 4.57 x 10 ⁵

520 x 10  ⁻⁶ = 5.20 x 10 ² x 10 ⁻⁶ = 5.2 x 10 ⁻⁴

0.00045 = 4.5 x 10 ⁻⁴

0.02 x 10 ⁷ =  2 x 10 ⁵

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