Question

[Nhi Phạm]

Tìm x

x/2-1/x=1/12

Answer 1

[Giang Hồ Đại Ca]

\(=\frac{x}{2}-\frac{1}{x}=\frac{1}{12}\)

= \(\frac{x}{2}-\frac{1}{x}=\frac{x^2-2}{2x}\)

= \(\frac{x^2-2}{2x}=\frac{1}{2^2.3}\)

= \(\frac{x}{2}-\frac{1}{x}-\frac{1}{12}=0\)

= \(\frac{6x^2-x-12}{12x}=0\)

 = \(\frac{1}{x}=0\)

= \(6x^2-x-12=0\)

=> x = \(-1\frac{1}{3}\)

= x = \(1\frac{1}{2}\)