Question

Factorise: x^2– 4/x^2
, x not equal to 0

Answer 1

Step-by-step explanation:

x² + 4/x²

according to a² + b²

(x)² + (2/x)²

( x + 2/x)² - 2.x.2/x

( x + 2/x)² - 4

Now,

According to a² - b²

( x + 2/x)² - ( 2) ²

( x + 2/x + 2 ) ( x + 2/x - 2) answer or solve after it

Answer 2

Answer:

okay

Step-by-step explanation:

(x+2/x) * (x-2/x)