Math, asked by MagnetLuck, 1 year ago

X^2+1/x^2=27, what is x-1/x=?

Answers

Answered by DEVARAJH
1

Answer:

Step-by-step explanation:

just expand, rearrange n substitute,!

(

x

1

x

)

2

=

x

2

2

x

1

x

+

(

1

x

)

2

=

x

2

2

+

(

1

x

)

2

=

x

2

+

1

x

2

2

since we have the value of  

x

2

+

1

x

2

as  

27

,

=

27

2

=

25

(

x

1

x

)

2

=

25

x

1

x

=

±

5

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