if ( x+ 1/x) sq find the value of X sq+1/ X sq
mysticd:
( x + 1/x )² = how much
3 X sq
Answers
Answered by
2
(x+1/x)^2
=x^2+2+1/x^2
x^2+1/x^2=-2
=x^2+2+1/x^2
x^2+1/x^2=-2
your answer is wrong it's 79 answer
Answered by
5
Hi ,
I think question is incomplete ,
It may be like this ,
( x + 1/x )² = 81---( 1 )
x² + 1/x² + 2 × x × 1/x = 81
x² + 1/x² + 2 = 81
Therefore ,
x² + 1/x² = 81 - 2
x² + 1/x² = 79
I hope this helps you.
I think question is incomplete ,
It may be like this ,
( x + 1/x )² = 81---( 1 )
x² + 1/x² + 2 × x × 1/x = 81
x² + 1/x² + 2 = 81
Therefore ,
x² + 1/x² = 81 - 2
x² + 1/x² = 79
I hope this helps you.
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