Answer:
1st option
Step-by-step explanation:
Using the rule of exponents
[tex]a^{m}[/tex] × [tex]a^{n}[/tex] ⇔ [tex]a^{(m+n)}[/tex] ( which can be used on more than 2 numbers )
Given
(- 7)² × [tex](-7)^{5}[/tex] × [tex](-7)^{-9}[/tex]
= [tex](-7)^{(2+5-9)}[/tex]
= [tex](-7)^{-2}[/tex]
