Question

\(\frac{x}{4}=\frac{16}{x}\)

Answer 1

\(\Rightarrow x^2=16.4\)

\(\Rightarrow x^2=64\)

x=-8 hoặc 8

Answer 2

\(\frac{x}{4}=\frac{16}{x}\)

\(\Rightarrow x^2=16.4\)

\(\Rightarrow x^2=64\)

\(\Rightarrow x=8\)hoặc \(-8\)

\(\)

Answer 3

\(\frac{x}{4}=\frac{16}{x}\)

=>x²=16.4

=>x²=64

=>x²=8²=(-8)²

=>x E{8;-8}