3 power 2a plus 9 =10•3 power a then a equals to
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3^2a+9=10×3^a
3^2a/3^a=10-9
3^a=1
Then a need to be 0 as
x^0=1
Therefore 3^0=1
Hence a=1
3^2a/3^a=10-9
3^a=1
Then a need to be 0 as
x^0=1
Therefore 3^0=1
Hence a=1
Mitanshu17:
sorry a=0
correct answer is 1 or 5
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