Question

se 1 - 4/x mais 4/X elevado a 2 = 0 então 2/x Vale​

Answer 1

1 - 4/x +4/x^2  = 0

(1 - 2/x)^2 = 1 - 4/x + 4/x^2 = 0

1 - 2/x = 0

2/x = 1

x = 2

portanto 2/x = 2/2 = 1