find value of x....ques 7
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Given: 4^x-4^(x-1)
=> (4–1)*4^(x-1)
=> 3*4^(x-1)
=>3*4^(x-1)=24 (GIVEN)
=> 4^(x-1)=8
=> 2^(2*(x-1))=2^3
by equating the powers,
2x-2=3
=> 2x=5.
x=5/2
Answered by
0
4^x-4^x-1=24
4^x-4^x/4=24
4^x{3/4}=24
4^x=32
2^2x=2^5
2x=5
x=5/2
i belive that this answer is correct.................................
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