Question

Alguém me ajuda

a)3⁹×9⁻²
---------
27⁷×81⁻⁵

b)3⁻⁶×27⁶
----------
243³​

Answer 1

3⁹×9⁻².......3^9. 3^-4.....3^5

------------- = ------------- = ------ = 3⁴ = 81

27⁷×81⁻⁵...3²¹ . 3-²°.....3¹

3⁻⁶×27⁶....3^-6. 3^18.....3¹²......1

----------- = ------------- = ------- = ---- = 1/27

243³.......(3^5)³............ 3^15....3³