Question

[Kaitoru]

\(\frac{\left(x-3\right)}{x+5}+\frac{x+5}{x-3}< 2\)

\(\frac{\left(x-3\right)^2+\left(x+5\right)^2}{\left(x-3\right)\left(x+5\right)}< 2\)

\(\frac{2x^2+4x+34}{x^2+2x-15}< 2\)

DÙNG PHÉP CHIA 

=> \(2+\frac{64}{x^2+2x-15}< 2\)

<=> \(2+\frac{64}{\left(x-3\right)\left(x+5\right)}< 2\)

Answer 1

[thuthu]

Cho  .Chứng minh :