Question

tìm x không thuộc z biết x/-2=-50/x

Answer 1

\(\dfrac{x}{-2}=\dfrac{-50}{x}\)

\(x^2=100\)

\(\Rightarrow\left[{}\begin{matrix}x=10\\x=-10\end{matrix}\right.\)

Answer 2

\(\dfrac{x}{-2}=\dfrac{-50}{x}=>x^2=-50\) x -2

=> x² = 100

=> x = 10 hoặc -10

Answer 3

\(\dfrac{x}{-2}=\dfrac{-50}{x}\)

\(x^2=\left(-50\right).\left(-2\right)\)

\(x^2=100\)

\(x=\left[{}\begin{matrix}10\\-10\end{matrix}\right.\)

Answer 4

\(\dfrac{x}{-2}=\dfrac{-50}{x}\)

Ta có :\(\dfrac{-x}{2}=\dfrac{-x}{50}\)

\(\Rightarrow\dfrac{-x}{50}=\dfrac{-x}{50}\)

\(\Rightarrow x=-1\)

Vậy x=-1