\(\dfrac{2^{2x-3}}{4^{10}}=8^3.16^5\)
\(\Rightarrow2^{2x-3}=8^3.16^5.4^{10}\)
\(\Rightarrow2^{2x-3}=2^9.2^{20}.2^{20}\)
\(\Rightarrow2^{2x-3}=2^{49}\)
Vì \(2\ne\pm1;2\ne0\) nên \(2x-3=49\)
\(\Rightarrow2x=52\Rightarrow x=26\)
Vậy..........
Chúc bạn học tốt!!!
BT1: Tìm x, biết
3) \(x:\dfrac{1}{2}+x:\dfrac{1}{4}+x:\dfrac{1}{8}+...+x:\dfrac{1}{512}=511\)
Tìm x thuộc Z biết \(2^{2x+1}=8^3.16^5\)
So sánh\(6.2^{12}+2^{13}\) và \(3^{10}\)
BT1: Tìm x, biết
1) \(\dfrac{-2}{5}+\dfrac{5}{3}.\left(\dfrac{3}{2}-\dfrac{4}{15}x\right)=\dfrac{-7}{6}\)
BT1: Tìm x \(\in\) Z biết:
1) \(\dfrac{1-x}{2017}+\dfrac{2-x}{2016}=\dfrac{3-x}{2015}+\dfrac{4-x}{2014}\)
BT1: Tìm x, biết:
4) \(\dfrac{-8}{13}+\dfrac{-7}{17}+\dfrac{21}{13}\le x\le\dfrac{-9}{14}+3+\dfrac{5}{-14}\)
BT1: Tìm x, biết:
3) \(\dfrac{x-1}{2}=\dfrac{8}{x-1}\)
BT1: Tìm x, biết:
1) \(x+\text{|}\dfrac{1}{2}-\dfrac{1}{3}\text{|}=\text{|}\dfrac{-2}{3}-\dfrac{1}{4}\text{|}\)
BT1: Tìm số nguyên x, biết:
1) \(-3+\dfrac{1}{2}< x< \dfrac{7}{2}+\dfrac{1}{3}\)
BT1: Tìm x, biết:
7) \(\dfrac{1}{6}.x+\dfrac{1}{10}.x-\dfrac{4}{15}.x+1=0\)
