Math, asked by appumohan2014, 1 year ago

7 power 1+x + 7 power 1-x is equal to 50 howww

Answers

Answered by mathupto12
4

7 {}^{x + 1 } + 7 {}^{1 - x} = 50
7 {}^{1 - x}(7 {}^{2} + 1) = 5
7 {}^{1 - x}(50) = 50
7 {}^{1 - x} = 1
7 {}^{1 - x}  = 7 {}^{?0}
On comparing
1-x=0
so x=1

appumohan2014: will u plz make it clear
mathupto12: what is there to clear in it its all clear
mathupto12: you tell what problem you are facing in it
appumohan2014: how did you get 7 square +1
mathupto12: if you will take 7x-1 from 7x+1 then you will get 7²
appumohan2014: tqq
appumohan2014: can we do that by using law of indices
mathupto12: i dont know about this law
appumohan2014: kkk
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