Question

If x + 1/x = 5 and x - 1/x = 3, then x^2 - 1/x^2 = ?

Answer 1

Answer:

This is no answer because this question is wrong.

x＋1/x＝5→x＋1＝5x→x＝1/4

x－1/x＝3→x－1＝3x→x＝－1/2

so this is no answer.