if x + 1 / x = 5.then x2 +1/x2 =?
Answers
Answered by
18
Heya!!!
( x + 1/x ) = 5
SQUARING BOTH SIDE'S.
( x + 1/x )² = 5²
=>
x² + 1/x² +2x/x = 25
Becoz ( a + b )² = a² + b² +2ab
=>
x² + 1/x² = 25 - 2
=>
x² +1/x² = 23
( x + 1/x ) = 5
SQUARING BOTH SIDE'S.
( x + 1/x )² = 5²
=>
x² + 1/x² +2x/x = 25
Becoz ( a + b )² = a² + b² +2ab
=>
x² + 1/x² = 25 - 2
=>
x² +1/x² = 23
Answered by
6
Hope it helps.....
mark as brainliest.....
mark as brainliest.....
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x +1 / x = 5...........x whole divide mai nhi hai wo srf 1 ko divide mai hai
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