Câu hỏi của Chiencuc Tran

Question

tìm x biết (1/16)^x=(1/2)^10

Lấp La Lấp Lánh · Accepted Answer

$\left(\dfrac{1}{16}\right)^x=\left(\dfrac{1}{2}\right)^{10}$

$\Leftrightarrow\dfrac{1}{16^x}=\dfrac{1}{2^{10}}$

$\Leftrightarrow\dfrac{1}{2^{4x}}=\dfrac{1}{2^{10}}$

$\Leftrightarrow4x=10\Leftrightarrow x=\dfrac{5}{2}$

Câu trả lời:

$\left(\dfrac{1}{16}\right)^x=\left(\dfrac{1}{2}\right)^{10}$

$\Leftrightarrow\dfrac{1}{16^x}=\dfrac{1}{2^{10}}$

$\Leftrightarrow\dfrac{1}{2^{4x}}=\dfrac{1}{2^{10}}$

$\Leftrightarrow4x=10\Leftrightarrow x=\dfrac{5}{2}$