I recieved this following question ; Write 85184^85184 as a power of 1936
Usually the prime factors of both of them are the same number making it easier but this time the prime factor involves two numbers. Me and my dad tried to solve this but couldn't find a way. Please help!
I have considered what you have said Melody and I powered through most of my homework using Cphill's method
AFTER seeing Chris' answer, I found the error in mine
85184 = 44^3
(44^3)^(44^3) = 44^(3x44^3) = 44^ (255552) = 44^(2 x 127776) = (44^2)^127776 = 1936^127776
as Chris found !
Ya, I'm in grade eight. With this question even my dad was connfuzzled! Resorting to this website as a last hope....
Factor 85184 = 2^6 * 11^3 = [ 2^2 *11] [2^2 *11] [2^2 *11] = [ 2^2 * 11]^3
Factor 1936 = 2^4 * 11^2 = [2^2 *11] [2^2 * 11]= [2^2 *11]^2
So
85184 = ( [2^2 *11]^2])^(3/2) = 1936^(3/2)
So we have
[ 1936^3/2] ^ 85184 = 1936^127,776
Nice job, Chris ! Looked at it for a while...didin't quite come up with that !
AFTER seeing Chris' answer, I found the error in mine
85184 = 44^3
(44^3)^(44^3) = 44^(3x44^3) = 44^ (255552) = 44^(2 x 127776) = (44^2)^127776 = 1936^127776
as Chris found !
EP and CPhill: How in the world did you guys get:85,184^85,184 =1936^127, 776???!!!, when direct calculation of 85,184^85,184 =4.153186160584012410564019499453 x 10^419,987???.
Well, Mr. Blarney, they have shown their work. Now all you need is a brain – an active one, of course. Having a petrified pile of oatmeal in its place won’t do.
Here is an easier way using logarithms:
Write 85184^85184 as a power of 1936
.
\(\dfrac{85184*log(85184)}{log(1936)} =127776\\ \;\\ 85184^{85184} = 1936^{1227776}\)
Normally I wouldn’t bother presenting this for you, because it’s like trying to teach a pìg to sing, and doing that is a waste time and annoys the pìg. However, there may be a bright eleven-year-old who will understand this. It’s not that difficult, really--not for a bright eleven-year-old.