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21 votes
21 votes
If (8^a)^b = 1, what must a or b equal?

List a possible value for a and b.

User Gratzi
by
3.5k points

1 Answer

25 votes
25 votes

Answer:

a = 0, b = 3

Explanation:

  • Exponent rule:
    (a^b)^c=a^(bc)
  • The zero exponent rule:
    a^0=1


(8^a)^b=1\\\\\implies 8^(ab)=8^0\\\\\implies ab=0

Possible values for a and b: a = 0, b = 3

User Elliott Beach
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2.9k points