Question

2^x-3/4¹⁰ = 8³. Giúp mình nha , mình cảm ơn truoc !!

 

Answer 1

\(\Leftrightarrow2^{x-3}=2^9\cdot2^{20}=2^{29}\)

=>x-3=29

hay x=32

Answer 2

`=> 2^(x-3) = 8^3 xx 4^10`

`=> 2^(x-3) = 2^9 xx 2^20`

`=> 2^(x-3) = 2^19`

`=> x - 3 = 19`

`=> x = 22`

Answer 3

Ta có \(\dfrac{2^{x-4}}{4^{10}}=8^3\Leftrightarrow\dfrac{2^{x-4}}{2^{20}}=2^9\Leftrightarrow2^{x-4}=x^{29}\Leftrightarrow x=33\)

Vậy...