Question

$\frac{5}{x} = \frac{36x}{5}$

Answer 1

36x²=25
x²=25/36

x₁=5/6
x₂=(-5/6)

Answer 2

\frac{5}{x} = \frac{36x}{5}  
Produsul mezilor= Produsul extremilor, adica  36x × x=5×5

                                                                          36x²=25
                                                                           x²=25/ 36
                                                                           x=√25/√36
                                                                          x=5/6  ⇔x₁=+5/6 ;    x₂=- 5/6