SOLUTION: 3^x*3^x+1*3^x-2=243
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Question 198963: 3^x*3^x+1*3^x-2=243
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Start with the given equation.
Multiply the first two terms using the identity
Combine like terms.
Multiply the remaining terms using the identity
Combine like terms.
Rewrite 243 as
Since the bases are equal, this means that the exponents are equal.
Add to both sides.
Combine like terms on the right side.
Divide both sides by to isolate .
Reduce.
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Answer:
So the solution is
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