Bạn tham khảo!
$\dfrac{1}{10}$ $:$ $($ $\dfrac{3}{4}$ $-$ $2x$ $)^{2}$ $=$ $0,4$
$→$ $($ $\dfrac{3}{4}$ $-$ $2x$ $)^{2}$ $=$ $\dfrac{1}{4}$
$→$ $($ $\dfrac{3}{4}$ $-$ $2x$ $)^{2}$ $=$ $($ $\dfrac{1}{2}$ $)^{2}$ hoặc $($ $\dfrac{3}{4}$ $-$ $2x$ $)^{2}$ $=$ $($ $\dfrac{-1}{2}$ $)^{2}$
$→$ $\dfrac{3}{4}$ $-$ $2x$ $=$ $\dfrac{1}{2}$ hoặc $\dfrac{3}{4}$ $-$ $2x$ $=$ $\dfrac{-1}{2}$
$→$ $2x$ $=$ $\dfrac{1}{4}$ hoặc $2x$ $=$ $\dfrac{5}{4}$
$→$ $x$ $=$ $\dfrac{1}{8}$ hoặc $x$ $=$ $\dfrac{5}{8}$
$FbBinhne2k88$
