Question

T if x square + 1 by x square is equal to 18 then find the value of x minus one by x

Answer 1

Answer:

4

Step-by-step explanation:

x²+ 1/x² = 18

x- 1/x = Y

SQUARING BOTH THE SIDES

x²+1/x² - 2 = Y²

WE KNOW THAT X²+1/X² = 18...SO

18-2=Y²

16= Y²

Y=√16

Y= 4

..............HOPE IT HELPED................