x^2+1/x^2=2 then x-1/x=
Attachments:
Answers
Answered by
2
given ,
x^2 + 1 / x^2 = 2
( x )^2 +( 1 / x )^2 + 2 (x ) (1 / x)
- 2 ( x )( 1 / x) = 2
( x - 1 / x )^2 + 2 = 2
( x - 1 / x )^2 = 2 - 2
( x - 1 / x )^2 = 0
( x - 1 / x ) = 0
hence option ( c ) is correct.
x^2 + 1 / x^2 = 2
( x )^2 +( 1 / x )^2 + 2 (x ) (1 / x)
- 2 ( x )( 1 / x) = 2
( x - 1 / x )^2 + 2 = 2
( x - 1 / x )^2 = 2 - 2
( x - 1 / x )^2 = 0
( x - 1 / x ) = 0
hence option ( c ) is correct.
Attachments:
TheLostMonk:
what happen you don't got it , hahahaha
nammina
how's it looks at notebook , check it now .
i hope you will understand it now
Similar questions