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Sagot :

VINS

bonsoir

A = √28 = √4 * √7 = 2 √7

B = √50 : √4 = √ 2 * √25  : √2 * √2 = 5 √2 / 2

C = √( - 7 )²x 2  = √98 = 7 √2

A = 2 ⁻³ / 2 ¹⁰ = 2 ⁻¹³

B = 2 ³ x 2 ⁻⁹ = 2 ⁻⁶

C = 10 ⁻¹ / 10 ⁻⁵ = 10 ⁴

D = 3 ⁻⁹

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