Question

If x+1/x =5 find the value of x-1/x

Answer 1

X+1/X=5

X+1=5×X

X+1=5X

1=5X-X

1=4X

X=1/4

X-1/X

(1/4-1)/1/4

[(1-4)/4]/1/4

-3/4÷1/4

-3/4×4/1

-3