Question

if X + 1/ X is equals to √ 5 find x- 1 /X

Answer 1

Answer:

x + 1/x = √5

squaring both sides-

x² + 1/x² + 2 = 5

x² + 1/x² = 3

____________

Answer 2

x+1/x=√5

we know that

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

(x-1/x)^2=5-4

x-1/x=1

hope it helps