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bonjour

9 ⁻⁶ x 9 ⁴ = 9 ⁻²

8 ³/ 8 ⁻²= 8 ⁵

15 ³ x 2 ³ / 30 ⁵

= 15 ³ x 2 ³ / ( 2 x 15 ) ⁵

= 15 ³ x 2 ³ / 2 ⁵ x 15 ⁵

=  2 ⁻² x 15 ⁻²

=  30 ⁻²

6 ⁻³ / 2 ⁻³ = 3 ⁻³

( 10 ⁻⁵) ⁻⁴  x 10 :  10 ⁻¹⁶ x 10 ⁻⁷

= 10 ²⁰ x 10  : 10 ⁻²³

= 10 ²¹ / 10 ⁻²³

= 10 ²

allez termine

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