If 2^x-2^x-1=8, then find the value of x^3 is? Please explain without logs :)
kartikay304kala:
Ok now listen
first we can write 2^(x-2) as 2^x/2^1 ok
now taking lcm we can get it as
2.2^x-2=8.2
Ok now are you understood
Guys, the question is from a book, I have posted it as it is.
Where
a link
https://imgur.com/a/s4Ro3YZ
The answer in the book is x=4 hence x^3=64 but I do not understand how they got it
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Here is the answer to your answer
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How did you get 22x and what happened to it afterwards as you arrive at 2x=16?
You can post this question can cam you
say
i will give it in a detailed way them
Ok now post
https://imgur.com/a/s4Ro3YZ The picture of the question from the book
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