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Sagot :
Answer:
- b. 1/3²¹
Step-by-step explanation:
- 3⁻⁹ / 3⁻¹² =
- 3⁻⁹⁻¹² =
- 3⁻²¹ =
- 1/3²¹
Correct choice is b
[tex]\\ \rm\leadsto \dfrac{3^{-9}}{3^{-12}}[/tex]
[tex]\\ \rm\leadsto 3^{-9+12}[/tex]
[tex]\\ \rm\leadsto \dfrac{1}{3^3}[/tex]
Option A
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