a x a x a x a x a x a x a = ________

• 
• 
• 
• 7 x a

Which is equal to:

• 
• 
• 
• 

Which is equal to

• 
• 
• 
• 

Which is equal to

• a⁹
• 20a
• 9a
• a²⁰

Which is equal to

• 
• 
• 
• 

Which is equal to

• a²⁰
• a⁹
• a
• 9a

Which is equal to

• 
• 
• 
• 

Which is equal to

• a
• 1
• 9
• 9a

Which is equal to

• 1
• 2
• 4
• 0

Which is equal to

• a⁰
• a
• a¹
• 1a