queerqween12906 queerqween12906
  • 10-10-2019
  • Mathematics
contestada

This is about exponents

This is about exponents class=

Respuesta :

jimrgrant1 jimrgrant1
  • 10-10-2019

Answer:

B

Step-by-step explanation:

Using the rules of exponents

[tex]a^{m}[/tex] × [tex]a^{n}[/tex] ⇔ [tex]a^{(m+n)}[/tex] and

[tex]a^{0}[/tex] = 1, then

[tex]9^{x}[/tex] × [tex]9^{-x}[/tex]

= [tex]9^{(x-x)}[/tex]

= [tex]9^{0}[/tex] = 1 → B

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