Question

.....This is maths question, class 8

Answer 1

x-1/x

=x and x gets canceled and -1

= -1

Answer 2

Answer:

±5

Step-by-step explanation:

(x - 1/x)²

=x² -2 + 1/x²

27-2 ( as x² +1/x² = 27)

=25

∵(x-1/x)² = 25

x-1/x = ±5