9^3x+1 - 5(9^x) = 108
the answer is said to be 1/2. But i can't seem to get it and i think the question is wrong somehow. Please help. and there's another one.
square 5 / square root 25 = 1/125
It says to solve the equation. May I ask what the question is looking for really? There doesn't seem to be an unknown.Thanks.
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Originally posted by bonkysleuth:9^3x+1 - 5(9^x) = 108
the answer is said to be 1/2. But i can't seem to get it and i think the question is wrong somehow. Please help. and there's another one.
There is something wrong. To check, you sub back x=1/2 into the equation... you will find that you get 13 instead of 108...
Originally posted by bonkysleuth:square 5 / square root 25 = 1/125
It says to solve the equation. May I ask what the question is looking for really? There doesn't seem to be an unknown.Thanks.
Question also got problem. Left hand side is not equal to right hand side