Question

2-
a) 7⁹.7-⁶
b) 10-⁹.10.10⁵
c)6⁴:6⁵
d)2⁷:2-²
e​

Answer 1

Resposta:

$a) 7^{9} x 7^{-6} = 7^{9-6} = 7^{3}\\b) 10^{-9}x10x10^{5} =10^{-9+1+5}=10^{-3} \\c)6^{4} : 6^{5}=6^{4-5} = 6^{-1} \\d)2^{7} : 2^{-2} =2^{7+2} = 2^{9}$

e) nao foi colocado entao nao sei