Question

if x=1-root2 find the value of x^2-1/x^2​

Answer 1

Step-by-step explanation:

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Given, x = 1- root 2

= x ² -1/ x ²

= ( 1- root 2²) - 1 / ( 1-root 2) ²

= ( 1 -2 ) -1 / ( 1 - 2)

= -1 -1 /-1

= -2 /-1

= 2