Question

X-1/x=8 find x+1/x and x.x-1/x.x

Answer 1

Step-by-step explanation:

x - 1/x = 8

x + 1/x = √(x - 1/x)² + 4

x + 1/x = √(8)² + 4

= √64+4

x + 1/x = √68 = 2√17

(x - 1/x)(x + 1/x) = 8(2√17)

x² - 1/x² = 16√17