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4^(x-1) + 4^x + 4^(x+1)= 21 ​

4^(x-1) + 4^x + 4^(x+1)= 21 ​
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4^(x-1) + 4^x + 4^(x+1)= 21 ​

asked
User Michael McFadyen
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7.8k points

1 Answer

0 votes

Answer: x = 1

Explanation:

isolate the variable by dividing both sides by factors that don't contain the variable.

answered
User Roshan Mathews
by
8.5k points
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