Question

\(\frac{x+2}{-18}=\frac{-8}{x+2}\)

Answer 1

\(\frac{x+2}{-18}=\frac{-8}{x+2}=\frac{-18}{-8}=10\)

Vậy x = 10

Answer 2

\(\frac{x+2}{-18}=\frac{-8}{x+2}\)

\(\Rightarrow\left(x+2\right)\left(x+2\right)=-18.\left(-8\right)\)

\(\Leftrightarrow\left(x+2\right)^2=144\)

\(\Leftrightarrow\left(x+2\right)=12\) hoặc \(\left(x+2\right)=-12\)

\(\Leftrightarrow x=10\) hoặc \(x=-14\)