Question

if x² + 1/x²=38,then find the value of [x-1/x]​

Answer 1

Answer:

(x-1/x)²=x²+1/x²-2

=38-2=36

x-1/x=√36=6

Answer 2

Hey mate here is your answer.

x²+1/x²=38

(x-1/x)²=x²+1/x²-2×x×1/x

(x-1/x)²=38-2

x-1/x=√36

x-1/x=±6

Hope it helped you.