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This is absolutely correct. Just a general piece of advice with any exponent problems like this (particularly ones that mention "factors"): always start by getting down to prime factorization. Convert 4 to 2^2, etc. This will allow you to get equal bases, and then to simplify.Param800 wrote:Hello There,
I did this question this way--
4^17-2^28 = 2^34-2^28
Now factor out 2^28 from the above expression...
2^28 ( 2^6 -1 ) = 2^28 * 63
63 can be written as 7*3*3
...So from above we know that the greatest prime factor is 7.
Hope this helps. And BEST OF LUCK for your Exam.
