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# maffs question 3 Watch

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1. (Original post by KloppOClock)
Why am I tagged and what the hell am I looking at? What's wrong?
2. (Original post by RDKGames)
Why am I tagged and what the hell am I looking at? What's wrong?
i tagged you cuz ur smart and the question is the picture
3. (Original post by RDKGames)
Why am I tagged and what the hell am I looking at? What's wrong?
question is how to do it without using the change of base rule
4. (Original post by KloppOClock)
question is how to do it without using the change of base rule
Not that I see. That rule is there for a reason, so use it, it isn't much.
5. (Original post by RDKGames)
Not that I see. That rule is there for a reason, so use it, it isn't much.
but the specification literally says they dont set questions based upon the change of base rule (the bit that i outlined it red) so i must be doing this wrong
6. (Original post by KloppOClock)
but the specification literally says they dont set questions based upon the change of base rule (the bit that i outlined it red) so i must be doing this wrong
Then the only other thing I can think of is using your knowledge from FP1 concerning roots of quadratics and applying it to this scenario.
7. 5=2 to the x and 3 =2 to the x
Log 5 / log 2 = x and log 3 / log 2 = x

And them like you would normally fractions to get the answer then apply log ab = log a + log b

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