Question

alguem sabe ? x/8=2/x?

Answer 1

x/8 = 2/x
x²/8x = 16/8x
x² = 16
x = + - 4

Answer 2

 x           2
----   =  ------
  8           x

x.x = 8.2
x² = 16
x = √16
x = +/- 4

R.: x = 4 e x = - 4